Answer: Drug abuse
Explanation:
Repeated use of a drug or alcohol to the point of periodic or chronic intoxication that is detrimental to the user or society is called drug abuse or substance abuse.
Substance abuse or drug misuse, is use of a drug or substances in overdose amounts that for the purpose of intoxication or mood alteration. Most drugs abused have properties that are sedative, stimulants among many other properties.
Drug misuse have detrimental and adverse effects on both the individual and the society at large
A researcher found a method she could use to manipulate and quantify acetylation in embryonic cells in culture. In one set of experiments using this procedure in Drosophila, she was readily successful in increasing acetylation of amino acids in histone tails. Which of the following results would she most likely see?a) decreased chromatin condensation.
b) inactivation of the selected genes.
c) activation of histone tails for enzymatic function.
d) increased chromatin condensation.
e) decreased binding of transcription factors
Answer:
a) decreased chromatin condensation.
Explanation:
Chromatin Condensation is the reordering of the long thin chromatin strands into pact short chromosomes that occurs in mitosis and meiosis. Decreased in chromatin condensation is depicted by a reduction in the volume of Chromosomes which is brought by certain Histone modifications. For example as given in the question; increasing acetylation of amino acids in histone tails takes place on the NH3+ groups of Lysine amino acid residues which therefore decreased chromatin condensation.
This is because increased acetylation take away the positive charge on the histones, thus decreasing the interaction of events occuring between the N-terminai tails of histones with the negatively charged phosphate groups of DNA. The effect of that event therefore contributes to the decrease chromatin condensation.
You can more easily prevent ___________________ or at least make sure they are detected early and managed well if you research those associated with your patient's diagnoses, diagnostics, and treatment, and if you report all abnormal dat
Answer: Diseases
Explanation:
As the saying goes 'prevention is better than cure', so also diseases can be easily prevented or managed well if only it is detected early or abnormal symptoms are quickly reported for diagnosis and treatment.
Early detection/diagnosis could help in disease prevention or its management in your body by
- administering vaccine to boost the immune system
- administering drugs to combat premature disease-causing organisms (pathogens)
- adjusting surroundings, lifestyle or diets to enhance body fitness
the scientific method is used by scientists to explain a certain natural phenomenon, and it involves the formation of a ______ as a tentative explanation of the observed or measured phenomenon
Answer:
Hypothesis
Explanation:
In the scientific method used by scientist, The Hypothesis has a tentative or proposed explanation that gives report of an observed or measured phenomena. The hypothesis is usually based on previous observations which fails to be explained by available scientific theories. It is the starting point for further investigation that can be tested through experimentation.
Although hydroelectricity is the least expensive energy source used to generate electricity most utility companies in The United States do not use this form of energy because?
The usage of hydroelectricity in the US is limited by geographical conditions, the potential environmental impacts of hydroelectric stations, the high costs and time consumption of setting up these stations, and inconsistency in electricity supply due to variability in water flow.
Explanation:Hydroelectricity, although a renewable and relatively inexpensive source of energy, is not more dominantly utilised by utility companies in the United States due to several reasons. Firstly, this method of generating power is dependent on geographical locations with considerable amounts of running water, making it less feasible in certain parts of the country where such resources are not readily available.
Secondly, despite hydroelectric power being a cleaner energy source compared to fossil fuels, the process of establishing hydroelectric stations and dams can lead to environmental concerns such as the displacement of habitats and ecological systems. The installation of these power plants can also be costly and time-consuming.
Lastly, despite hydroelectricity being renewable, the variability in water flow due to seasonal changes can impact the consistency of electricity supply. Therefore, while the United States does use this form of energy (around 10% of the total usage), it is limited by geographical, environmental, and operational factors.
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A typical PCR program is listed below. Define what is happening to promote DNA in steps 2‐4 below amplification (i.e., what happens to DNA and enzyme in those steps). PCR program – C487 Amplification 1. 95° C for 1 minute 30 seconds 2. 95° C for 30 seconds (melting) 3. 52° C for 30 seconds (annealing) 4. 72° C for 60 seconds (DNA elongation) 5. Repeat steps 2‐4, 29 times (30 cycles total) 6. 72° C for 5 minutes 7. Hold at 4° C
In step 2: Denaturation of the double-strand occurs.
In step 3: Annealing of the primer to the single strands.
In step 4: Extension or elongation takes place in this step.
Explanation:
In the PCR program an enzyme Taq Polymerase is used because it can withstand high temperature without altering its functions.
PCR is required for the amplification of DNA into multiple copies for experimental purpose. The artificial environment is created to form new DNA molecules from the sample in question.
The first step in replication is the opening of the double helix which is done by temperature treatment in PCR. The temperature would be 90 degrees for some 30 sec to two minutes.
The next step of primer annealing would be done at 52 degrees, this is the primer melting temperature.
The elongation of the DNA strand to be synthesized will take place at 72 degrees as Taq Polymerase can withstand that temperature.
Nearly one million copies of DNA will be made after 30 cycles of PCR.
PCR products can be stored at 4 degrees for some two months.
What cellular structure is directly involved in converting the "message" found in a nucleic acid into a specific sequence of amino acids to make a protein.
Answer:
Ribosomes
Explanation:
After Transcription, the mRNA has to be translated into a protein. The ribosomes is responsible for this process.
In a cell, Ribosomes can be found floating or attached to endoplasmic reticulum.
They are in charge of protein synthesis also known as Translation.
it is important to note the whole process takes place inside the ribosome. This process involves 'decoding' cell's genetic information into long chains of Amino acid that make a polypeptide or protein.
The three-dimensional structure of macromolecules is formed and maintained primarily through noncovalent interactions. Which one of the following, if any, is not considered a noncovalent interaction.
Answer:
Carbon-Carbon bond is not considered as a noncovalent interaction because electrons are shared between the two carbons forming a strong covalent bond.
Explanation:
Non covalent interactions does not involve sharing of electrons rather it involves dispersed variation of electromagnetic interactions between the molecules.
Examples include;
Hydrogen bond- in order to be formed the donor Atom has to be electronegative
Ionic interactions- These are attractions between two oppositely charged ions
Van der waals- It is formed due to small , transient asymmetric electron distribution around atoms
What process did Watson and Crick use to develop their model of DNA, and how did it differ from the controlled experiments used by Griffith, Avery, and Hershey and Chase?
Answer:
Watson and Crick already knew DNA's composition, based on the work of other researchers (Franklin). G A H and C manipulated possible components of DNA that would be able to identify DNA's material.
Explanation:
Watson and Crick is known for discovering the chemical compositions of the DNA.In 1953, they found that DNA has the double helical structure along with the stored information of the human gene.Griffith, Avery, and Hershey and Chase did an experiment to find that DNA is transferred through the generations and concluded that instead of protein, DNA carried the human genes.Final answer:
Watson and Crick used X-ray diffraction data, notably from Rosalind Franklin, and combined it with Chargaff's rules to develop their double helix model of DNA, without conducting their own experiments.
Explanation:
Discovery of the DNA Structure
In the 1950s, Francis Crick and James Watson utilized X-ray diffraction data from Rosalind Franklin to piece together the double helix structure of DNA. Unlike earlier experimenters who conducted controlled experiments like Griffith, Avery, and Hershey and Chase, Watson and Crick did not perform their own experiments but instead built upon existing research and information.
Franklin had shown through her X-ray diffraction images the helical nature of DNA, which Watson and Crick interpreted to model the double-stranded structure. Their use of Chargaff's rules, which indicated that certain DNA nucleotides always appeared in equal proportions, further guided them to propose the pairing now known as base pairing.
Rosalind Franklin's work was critical but often under recognized, whereas Watson and Crick's fame largely comes from the publication of the DNA model in their original Nature article. This model provided the foundation for understanding how DNA encodes information and how it is replicated, which underpins all modern biotechnologies.
One such technology is the polymerase chain reaction (PCR), a technique for amplifying DNA sequences. PCR and other biotechnological innovations like gene sequencing, DNA fingerprinting, and genetically modified foods rely on the fundamental understanding of DNA structure and function that Watson and Crick's model provided.
In this activity, you will explore how DNA microarrays are being used as a tool for studying-and possibly treating--cancer 1 2 3 4 567 89 10 11 12 13 14 15 16 The data shown here were obtained from a DNA microarray study of gene expression patterns in 16 cancer patients. Although data for many more genes were obtained from the DNA microarray, only 12 specific genes of interest are shown. gene F gene T gene 2 gene P gene X gene U gene B gene H gene S ene K gene G gene Q
The data in the chart are color-coded as indicated by the key that appears below the chart. Red represents high relative gene expression and blue represents low relative gene expression.
Dala frem T R edub ㎡ ' Molecular Clessiicafor, of Cancer: Class Discovery rd Clos Prodcin by Gone Expresson Monikring Science 2BB 531 537 1999)
Which of the following conclusions do the data support? Select all that apply
3 -2.5 21.5 1 0.5 0 0.5 1.5 2 2.5 3 Normalized Expression low high
A) Gene K is more highly expressed in cells from patients in Group I than in cells from patients in Group ll.
B) For some genes, there is variation in the amount of mRNA present, even among patients in the same group
C) Cells from patients in Group I carry different sets of genes than cells from patients in Group II.
D) A different set of genes is transcribed in cells from patients in Group ' oompared to cells from patients in Group II
E) If you were given microarray data from the cells of a new patient belonging to either Group I or Group II, you would probably be able to tell which group the patient belongs to.
Microarray data attached
Answer:
B, D, E are consistent with the data in the microarray
Explanation:
A) False, if you look at the microarray graph, Gene K is red on the right side of the graph (where patients in group II are) and generally more blue on the left side where group I patients are, meaning it is less expressed
B) This is true, look for example at gene F, individual 3 expresses it strongly, whereas individuals 6 and 7 are quite low.
C) No - microarray data looks at the expression of genes, not the genes themselves.
D) Yes, you can see that generally, genes B-Q are highly expressed in group II patients but not group I. In contrast, genes F-U are not expressed in group II but more expressed in group I.
E) Yes, although the data is not always consistent, there are clear patterns in group II patients not present in group I.
Final answer:
The DNA microarray data support conclusions about differences in gene expression levels between cancer patient groups, with color codes indicating relative gene expression. Gene K shows higher expression in Group I if indicated by red, and there is variation within groups. The data do not suggest different sets of genes but rather varying expression levels, which can potentially assign a new patient to a group.
Explanation:
The analysis of DNA microarrays involves comparing patterns of gene expression between different samples, in this case between cancerous cells from different patients. The color codes on a DNA microarray heat map provide valuable insights:
Red indicates a high relative gene expression specific to cancer cells.Blue indicates a low relative gene expression or genes that are more active in non-cancerous tissue.Yellow indicates genes that are expressed at similar levels in both cancerous and non-cancerous tissues.Considering the given scenarios and color codes, let's assess the conclusions that the data support:
Gene K is more highly expressed in cells from patients in Group I than in Group II if the spots corresponding to gene K are predominantly red for Group I and less intensely red or blue for Group II.There is variation in the amount of mRNA present, even among patients in the same group, if the color intensity varies within a group for a particular gene.Patients from Group I and Group II do not carry different sets of genes; instead, the same genes can have different levels of expression in the two groups.A different set of genes is not necessarily transcribed; rather, the same genes may be transcribed at different levels in cells from the two patient groups.Using microarray data, you could likely determine to which group a new patient's cells belong based on the pattern and intensity of gene expression.Mrs. Jones is to have hip surgery next Tuesday. She and her doctor have discussed using an auutologous blood transfusion. What does this mean for Mrs.Jones?
Answer:
The medical surgery is done to remove the damaged part or to make the body parts functional again if there is any problem in the proper functioning of the body.
Mrs. Jones has an autologous blood transfusion. This means the individual's blood is used for the transmission. Mrs. Jones will receive her own blood that she has deposited before the surgery. After the surgery the same deposited blood is used in the blood transfusion.
Which of these is required for natural selection to occur?
a. un-equal reproductive success.
b. inheritance.
c. individual variation.
d. all of the answers are correct.
Answer correctly 50 Points
Answer correctly 50 Points
1. The main goal of the Human Genome Project was to
a. treat genetic disorders.
b. insert human genes into bacteria.
c. identify the DNA sequence of every human gene.
d. to determine the number of chromosomes in humans
2. Variation in human skin color is an example of a(n)
a. intermediate inheritance.
b. codominance.
c. polygenic inheritance.
d. multiple alleles.
1. The main aim of the Human Genome Project was to determine the DNA Sequence of every human gene.
2. Variation in skin colour is an example of polygenic inheritance
This Human Karyotype is unusual because it has an extra chromosome at chromosome 21.
Klinefelters syndrome is shown in the second figure
Explanation:
1. The Human Genome Project's main goal was to sequence all the 30,000 genes and 3 million base pairs in their makeup for the early detection of diseases, gene therapy and molecular level studies.
2. Human skin colour is determined by the pigment melanin. The Dominant allele is responsible for dark colours as it produces more melanin. The melanocortin 1 receptor (MC1R) gene and Tyrosinase enzyme codes for the human skin colour. Polygenic inheritance are the traits which are controlled by one or more genes.
figures:
The extra chromosome at the 21st chromosome pairs is called trisomy 21 or Down's Syndrome. It is due to the abnormal cell division/meiosis resulting in an extra X chromosome. This leads to thechanges the in physical development of the individual.
Klinefelter's Syndrome: There are 47 chromosomes and 2 or more X chromosomes in this syndrome of males. The resulting male suffering from Klinefelter would be sterile and have poorly developed testicles.
Fossilization continues even today. If you wanted to increase the probability that your deceased favorite pet would become fossilized, what actions would you take?
Answer:
Place the corpse in an environment where decomposition is slow (such as a swamp or bog).
Explanation:
If any living thing gets preserved or its trace remains after a long period of time then a fossil is said to be formed and the process by which it is formed is termed as fossilisation.
There are several factors which affects whether a particular component will get fossilised or not, some of them are :
1. Hardness of the material - the harder the substance the higher the chances of getting fossilized.
2. The environment - whether it causes decay or preservation.
3. Speed of burial - the faster the burial the higher the chances of fossilisation .
Therefore, keeping these factors in mind to increase the probabilty of fossilization the corpse should be placed in environemnt where there is slow decomposition and such environment is provided in places such as bogs or swamps.
Final answer:
To increase the chance of a pet's fossilization, one should bury it quickly in sediment and in an environment with mineral-rich water, protecting it from decomposition and environmental fluctuations.
Explanation:
If you wanted to increase the probability that your deceased favorite pet would become fossilized, you would need to take actions that mimic the conditions that lead to fossilization. Permineralization is the most common method of fossilization. To facilitate this, after the death of the pet, it should be quickly buried in sediment to protect it from scavengers, bacterial activity, and environmental fluctuations in temperature and moisture. The burial should also be in an environment with mineral-rich water to allow minerals to gradually deposit into the pet's bones and any other hard parts, forming a fossil over time. Information such as the location of the burial, type of sediment, and other environmental factors should also be recorded for future paleoanthropologists or scientists who study fossils.
A nurse educator for a local home care company is teaching staff nurses on the use of the Outcome and Assessment Information Set (OASIS). What statement will the nurse include when teaching about the OASIS?
Answer:
"Results are used to improve overall quality improvement efforts."
Explanation:
The Outcome and Assessment Information Set (OASIS) can be described as data which includes the elements for the detailed assessment of a home care patient. Outcome-based Quality Improvement can be framed from the outcome and assessment information set (OASIS). The Outcome and Assessment Information Set (OASIS) contains the descriptive clinical status, functional status and services needed by the hoke care patient. It is used for planning further patient care.
Results are used to improve overall quality improvement efforts are the correct statement when teaching about the OASIS.
What does a nurse educator neutralize a hospital?
Nurse educators assist nursing staff in developing and maintaining their competencies, advancing their professional nursing practice, and facilitating their achievement of educational and career goals.
These professionals understand the challenges faced by nurses and the way to convey critical and lifesaving knowledge to them.
The Outcome and Assessment Information Set (OASIS) can be described as data that includes the elements for the detailed assessment of a home care patient.
Outcome-based Quality Improvement can be framed from the outcome and assessment information set (OASIS).
The Outcome and Assessment Information Set (OASIS) contains the descriptive clinical status, functional status, and services needed by the hoke care patient. It is used for planning further patient care.
Therefore, Nurse educators in OASIS improve overall quality improvement.
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Constructing phylogenies is not as simple as grouping organisms with similar characters together. Identify situations in which similar characters must be IGNORED.
-similar characters are derived
-similar characters evolved owing to convergent evolution
-similar characters evolved owing to gene flow
-similar characters are ancestral
Answer
similar characters evolved owing to convergent evolution; similar characters are ancestral
Explanation:
Convergent evolution happens when two organisms belonging to different species, living at different times or different continents but the same biome develop analogous structures hence making them appear similar. The analogous structures were not present in the known ancestors of both groups.
Therefore convergent evolution is ignored during constructing phylogenies
Also similar characteristics that are ancestral are ignored.
You purchase two identical houseplants and place them side by side on your windowsill. You water both plants equally. You leave one plant, plant A, alone, but you inject florigen into the cells of the shoot apical meristem of plant B. What would you expect to occur?
Answer:
Both plants will have equal conditions in these experiments including the water and other components except florigen. Florigen is a hormone that is responsible for triggering the flowering in a plant. It acts in the apical meristem of growing tips and buds.
As it is injected in the apical meristem of the plant so it will act on the plant b and flower would be induced at its apical meristem. Once the flower will be gone plant will grow taller but only from the lateral meristem of the plant b.
Answer:
the shoot apical meristem of plant B will develop into a flower
Explanation:
A 5 year old child announces to her parents that she is going to hold her breath until she is allowed to watch more TV. The parents are not worried. Explain why the parents are not worried. Explain how the child's blood carbon dioxide levels and blood hydrogen ion and bicarbonate ion levels change while she is holding her breath.
Explanation:
Parents are not worried because they know that when the child holds her breath, the level of carbon dioxide will increase and activate breathing centers forcing her to breathe.
A child’s blood carbon dioxide levels, blood hydrogen ion, and bicarbonate ion levels all increase during breath-holding increasing pCO2 (partial pressure of carbon dioxide).
PCO2 reflects how much carbon dioxide is dissolved in the blood.
The scope and character of nursing practice underwent significant changes in the years following the Civil War. Which activity exemplifies nursing practice in the early years of the 20th century?
Answer:
Providing basic health care to recent immigrants to the United States.
Explanation:
The nursing profession includes the proper study of the health care and provide medical support to the patient. The nursing profession must include the respect and moral support for the nurses in the society.
The nursing practice increase in 20 century. The nurses construct the settlement house for the medical help of the poor immigrants of the U.S. The nurses provide the free medical checkups, schooling and medicine to the poor people.
Thus, the answer is providing basic health care to recent immigrants to the United States.
Molecule 1 has the nitrogenous base sequence TCA AGT. Which set of bases in Molecule 2 can bond to that sequence in a complementary way?
The complementary sequence to TCA AGT in Molecule 2 is AGT TCA, based on the rules of complementary base pairing where A pairs with T, and C pairs with G.
Explanation:The question deals with understanding how DNA strands pair together based on complementary base pairing. In DNA, adenine (A) always pairs with thymine (T), and cytosine (C) pairs with guanine (G). Given the nitrogenous base sequence TCA AGT in Molecule 1, the complementary sequence in Molecule 2 would therefore be AGT TCA.
This is because T pairs with A, C pairs with G, and vice versa. This complementary base pairing is crucial for the structure of DNA and the transmission of genetic information.
The set of bases in Molecule 2 that can bond to the sequence TCA AGT in Molecule 1 in a complementary way is AGT TCA. The correct answer is A. AGT TCA.
The complementary base pairing rule in DNA dictates that adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G). Therefore, to find the complementary sequence in Molecule 2 for the given sequence TCA AGT in Molecule 1, we need to find the sequence that pairs with each base:
T (thymine) pairs with A (adenine)
C (cytosine) pairs with G (guanine)
A (adenine) pairs with T (thymine)
A (adenine) pairs with T (thymine)
G (guanine) pairs with C (cytosine)
T (thymine) pairs with A (adenine)
Based on these pairings, the complementary sequence to TCA AGT in Molecule 2 would be AGT TCA.
Therefore, the correct answer is a) AGT TCA
Complete Question
Molecule 1 has the nitrogenous base sequence TCA AGT. Which set of bases in Molecule 2 can bond to that sequence in a complementary way?
a) AGT TCA
b) GAT TCA
c) AGT TGA
d) TCA AGT
For most genes on the human X chromosome, what percent of XY males with a mutant allele on the X chromosome will express the mutant phenotype?
A., 0%
B., 25%
C., 50%
D., 100%
E., There is insufficient data to predict
Answer:
D. 100%
Explanation:
In humans, males have only one copy of the X chromosome in their cells. Therefore, human males express all the X-linked genes present on their X chromosomes irrespective of the recessive or dominant nature of the allele. This occurs since males do not have one more copy of the X chromosome to carry another allele for the gene. So, all the X-linked alleles present on the X-chromosomes of the human males are expressed.
For example, human males with genotype X^cY and X^hY express colorblindness and hemophilia respectively. Though, human females express these recessive X-linked disorders in homozygous genotype only.
Which theory would most likely suggest that children often take turns passing and shooting a basketball because they want to avoid having others angry at them, whereas adolescents often do so because they want to play the game the way it's supposed to be played?
A) Erikson's psychosocial development theory
B) Piaget's cognitive development theory
C) Haidt's intuitionist theory
D) Kohlberg's moral development theory
Answer:
D) Kohlberg's moral development theory.
Explanation:
There are 6 stages of Kohlberg's moral development theory.
1) Punishment and obedience orientation which includes obeying rules to avoid punishment.
2) Nave hedonism : Conforms to get rewards and to have favors returned.
3) Good boy / gorl morality : Conforms to avoid disapproval or dislike by others.
4) Conforms to avoid censures by authority.
5) Conforms to maintain communities : Emphasis on individual rights.
6) Individual principles of conscience.
Hence option D) Kohlberg's moral development theory IS THE RIGHT OPTION.
A nurse teaches the parents of a 7-year-old girl who has been prescribed long-term phenytoin therapy about care pertinent to this medication. Which statement indicates that the teaching has been effective?
Answer:
Phenytoin therapy may be defined as a therapy used for the prevention of the seizures. The antileptic drug is used during this therapy and inhibits the seizures in the body.
The side effect of phenytoin therapy is gingival hyperplasia that causes the excessive growth of the gums of individual. The oral hygiene can reduce the side effect of this therapy. The statement that the child require proper the massage and flossing of the teeth.
The parents' understanding of the importance of proper dosage, monitoring for side effects, and the need for regular healthcare follow-ups indicates that the nurse's teaching about phenytoin therapy for their child has been effective.
Explanation:A nurse teaches the parents of a 7-year-old girl who has been prescribed long-term phenytoin therapy about care pertinent to this medication. An indication that the teaching has been effective is a statement from the parents acknowledging the importance of adhering to the prescribed dosage and schedule, as well as the need to monitor their child for side effects since the effects of phenytoin can wear off quickly, and adjustments may be necessary over time to find the optimal dose for their child's condition. Moreover, recognizing the necessity of regular follow-ups with their healthcare provider to assess the effectiveness and adjust the medication as needed would also reflect an effective teaching outcome. Understanding these aspects demonstrates that the parents are prepared to manage their daughter's medication responsibly.
Fill in the blank below with the vocabulary word that best completes the sentence.Natural selection leads to , a process of change in a population over time.
Answer:
Evolution
Explanation:
Natural selection is usually defined as a process by which an organism or a specific type of living species adapts to a new environment in order to grow, develop, reproduce and protect themselves from the predators. During this time of migration, evolutionary changes occur in organisms over a specific period of time. It occurs naturally and there are several factors that affect these changes occurring in an organism.
Evolution simply refers to the growth, development, and expansion of an organism that occurs over a definite time period.
Answer:
evolution
Explanation:
Identical twins in humans, which are deuterostomes, are formed when cells at the four-cell stage are separated. A grasshopper, which is a protostome, will die if the cells are separated at the four-cell stage. What does this indicate about when the cells are differentiated in the zygote? Why might deuterostomes differentiate their embryonic cells later than the protostomes?
Answer:
Identical twins or deuterostomes, at the four-cell stage are separated. A protostome, will die if the cells are separated at the four-cell stage:
What does this indicate about when the cells are differentiated in the zygote?
This indicates that although in both, deuterostomes and protostomes, the zygote first early four-stage stage divisions occur into a blastula or hollow ball of cells, deuterostome embryos develop into a parallel or perpendicular to the polar axis division, known as radial cleavage, w
hile many protostomes develops under spiral cleavage, this is when the protostomes and the deuterostomes start to differ.
Why might deuterostomes differentiate their embryonic cells later than the protostomes?
Because in deuterostomes display indeterminate cleavage, in which the developmental fate of the cells in the developing embryo are not determined by the identity of the parent cell. The notochord, a flexible rod structure in mesodermal cells, a structural element of chordates and of the early embryo of vertebrates, plays an organizational role in the nervous system development. In later vertebrate development, it becomes part of the vertebral column. The anus forms first from blastopore, and then followed by the mouth. This all occurs in the gastrulation stage, by the other hand in the protostomes the mouth opening is the first to be formed from blastopore, and later followed by the anus. Most protostomes are schizocoelomates, which means a strong mass of the embryonic mesoderm parts to frame a coelom, which develops through enterocoely.
Explanation:
The main difference between protostomes and deuterostomes are how they develop in the early embryo stages.
While in protostomes in the lower invertebrate phyla, the mouth appears before the anus during development, cleavage is spiral and determinate, and the coelom forms as a splitting of the mesoderm, but if the first four cells are separated, each cell is capable of forming a complete small larva; and if a cell is removed from the blastula, the other cells will compensate, i
n the deuterostomes, the oral end of the animal develops from the second opening on the dorsal surface of the animal; the blastopore becomes the anus.
Animals from both groups possess a complete digestive tract, but in protostomes the first opening of the embryonic gut develops into the mouth, and the anus forms secondarily. In deuterostomes, the anus forms first while the mouth develops secondarily.
Because organisms are made primarily of water, they resist rapid temperature changes. This useful quality is based on water's _____
Answer:
High specific heat capacity.
Explanation:
The specific heat capacity of water is the quantity of heat energy needed to raise 1 kg of water by one degree.
The high specific heat capacity of water is due to high hydrogen bonds which holds water molecules together, preventing their free movements.Therefore, large amount of energy is needed to raise water temperature. The hydrogen bonds also enabled water to store energy.
This features of water makes, plasma resistant to fluctuations in body and environmental temperature, and allows biochemical reactions to occurs at relatively constant rate.
Which of the following is something you should do after severe weather occurs?1. clean up flood waters2. keep away from windows3. create a family safety plani4. nvite friends over to see the damages
Answer:
do in this way: 1 , 3 , 2 , 4
Explanation:
please give me brainliest as i just need 3 more until expert. plz plz plz
The correct answer is 1. Clean up flood waters. After severe weather, cleaning up flood waters is essential to prevent health hazards, mold growth, and structural damage.
After experiencing severe weather, it's critical to know the appropriate steps to ensure your safety and begin the recovery process. Here's a breakdown of what you should do:
Clean up flood waters: Ensuring that flood waters are cleaned up is crucial to prevent waterborne diseases, mold growth, and further structural damage to your home.Keep away from windows: Although keeping away from windows is important during severe weather, it's not a necessary step immediately afterward.Create a family safety plan: While creating a family safety plan is essential, it is something you should do before disaster strikes, not immediately after.Invite friends over to see the damages: This is not advisable as it can lead to additional hazards and delays in the recovery process.In conclusion, cleaning up flood waters is the most immediate and critical action to take after severe weather to ensure safety and prevent further damage.
Which of the following statements is a reason for NOT classifying viruses in one of the three
domains of life (Bacteria, Archaea, Eukarya) rather than in a fourth separate domain?
A) Some viruses can incorporate their genome into a host's genome.
B) Viruses direct anabolic pathways of host cells.
C) Viruses are obligate parasites.
D) Viruses are not composed of cells.
E) All of the answers are correct.
Answer:
The correct answer is D) Viruses are not composed of cells.
Explanation:
The reason why virus is not classified into the three-domain of life is that virus is not made up of cell and organisms that are present in the three-domain(bacteria, archaea, eukarya) are composed of cell.
Virus is only composed of nucleic acid and a protective protein coat called a capsid. So the virus is considered non- living when it is present outside the host because it does not show metabolic activities outside the host cell.
They are considered living when they are present in the host cell because there they perform metabolic activities and they reproduce there. So the correct answer is D). Viruses are not composed of cells.
Viruses are not classified in the three domains of life because they are not composed of cells and rely on host cells for reproduction.
Explanation:The main reason for not classifying viruses in one of the three domains of life (Bacteria, Archaea, Eukarya) as opposed to a separate domain is because viruses are not composed of cells (Answer D). This characteristic distinguishes them fundamentally from all cellular life forms. Unlike the organisms in the three domains, which are all composed of one or more cells, a virus is simply a piece of genetic material (DNA or RNA) enclosed in a protein coat known as a capsid. They cannot carry out cellular processes on their own, including reproduction. Instead, they invade host cells and use the host's cellular machinery to reproduce, which is why they are also referred to as obligate parasites (Answer C). Answers A and B also touch upon these unique characteristics of viruses.
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answer the question correclty please 50 POINTSS
Answer:
The correct option is A) 0%- no chance.
Explanation:
As we can depict from the chromosomes that the child gets, the child will have the alleles Dd for hair colour. As the allele for dark colour is dominant, hence the child will most likely have dark hair.
The punnet square for the child can be drawn as follows:
d d
D Dd Dd
D Dd Dd
The results of the punnet square show that there will be no chance for the child to have red hair.
Answer:
The correct answer is A)
Explanation:
There is only dark and blonde so there is no way it can come out red.
Simple sweat glands dispersed over the body surface that respond to increases in core and/or skin temperature and facilitate thermoregulation?
Answer:Eccrine sweatglnds.
Explanation:
These are major sweat gland concerned with sweat production in human,and other mammals.They are less distributed in the trunks and body extremities.But very distributed at the soles and palm.
The sweat they secreted help to cool the body temperature by making use of high latent heat of vaporization of water, to cool the core body temperature as the sweat evaporates through the sweat pores.
The nurse completes postop teaching for a client scheduled for a total abdominal hysterectomy. Which statement, if made by the client to the nurse, indicates the need for further teaching?
1 ."I will call my doctor if I have a temperature greater than 100.0°F (37.7°C)."
2. "I will use sanitary pads until the bleeding stops."
3. "I will report any problems with urination to my nurse as soon as possible."
4. "I will avoid any activity for the first 24 to 48 hours after my surgery."
Answer: if the client says that " I will use sanitary pads until the bleeding stops". He should be more instructions because sanitary pads should be used even after the bleeding stops because bleeding might occur again due to any reason like something might hit the area of surgery that might cause bleeding. Moreover as that area is uncovered it might get infected by bacteria as person is already weak at that time. So the wound should be kept covered until it heels completely.
The statement from the client that shows a need for further teaching is "I will avoid any activity for the first 24 to 48 hours after my surgery," which is incorrect as light activity post-surgery is important to prevent complications.
Explanation:The statement that indicates a need for further teaching is option 4: "I will avoid any activity for the first 24 to 48 hours after my surgery." While it is true that rest is important after surgery, complete avoidance of any activity, including necessary movements such as walking to prevent blood clots or doing gentle exercises to aid circulation, is not advised. Patients are typically encouraged to engage in light activities to prevent complications such as deep vein thrombosis, pulmonary embolism, or pneumonia that can result from prolonged immobility. The other statements reflect a good understanding of postoperative care:
Monitoring for fever, as stated in option 1, is crucial since a fever could indicate an infection.Using sanitary pads, as mentioned in option 2, is appropriate for dealing with post-surgical bleeding.Reporting urinary problems, as per option 3, is important because it can be a sign of possible complications such as a urinary tract infection or urinary retention.Therefore, the client needs more detailed guidelines regarding postoperative activity levels to ensure a safe and effective recovery process.