Answer:
A - mitosis
B - Meiosis
Explanation:
Mitosis is also referred to as equational division or division of vegetative or somatic cells. This type of cell division leads to the production of cells that are genetically identical to the parent cell.
Meiosis is also referred to as reductional cell division or the division of sex cells. The daughter cells have half of the genetic component of the parent cell. Exchange of chromosomal materials takes place between non-sister chromatids during meiosis and this ensures that the daughter cells become genetically different from their parent cell.
Hence, (A) is mitotic cell division while (B) is meotic cell division.
Very low concentrations of detergent make membranes leaky to small molecules and ions without damaging proteins. In isolated mitochondria exposed to detergent, the molecules of the electron transport chain and of ATP synthase remain intact. Do you expect ATP synthesis to continue in the presence of low concentrations of detergent?A. Yes, because all enzymes and electron carriers are functionalB. No, because with a leaky membrane, the proton gradient cannot be maintainedC. No, because leaky membranes inhibit glycolysisD. No, because leaky membranes do not allow NADH and FADH2 to donate their electrons to the electron transport chain
No, because with a leaky membrane, the proton gradient cannot be maintained
Explanation:The cell membrane is composed of a protein lipid bilayer. The detergent is very efficient to clean out portions of lipid from the protein part, thus disrupting the cell membrane. In presence of low concentration of detergent, the small portions of lipid are taken out, leaving the cell membrane structure intact, but with smaller pores which can lead to leakage of several smaller substances from inside.
So these leaky membranes don't allow the gradient of proton to build up. Thus ATP cannot be produced. So the cell cannot respire with detergent present.
The main difference between early and late selection models of attention is that in late selection models, selection of stimuli for final processing doesn't occur until the information is analyzed for __________.
Answer:
B. meaning
Explanation:
Here is the complete question:.
The main difference between early and late selection models of attention is that in late selection models, selection of stimuli for final processing doesn't occur until the information is analyzed for
A. modality.
B. meaning.
C. physical characteristics.
D. location.
B. meaning
In the model of attention in late selection models, selection of stimuli for
final processing doesn't occur until the information is analyzed for meaning.
In late selection models, information is selected after stimuli identification
and processing of the information for meaning. In early selection models,
the stimuli aren't yet fully processed to form information and occurs at the
early stages of processing.
This means that the model of attention in the late selection model occurs
only when information has been analyzed and processed to give a meaning
after which action occurs.
Read more on https://brainly.com/question/6392847
The failure of chromosomes to separate during meiosis is called
Answer:
Nondisjunction.
Explanation:
Nondisjunction occurs when chromosomes fail to segregate during cell division. It can occur during the process of mitosis as well as meiosis.
The cells in the body are all diploid, that is, have two sets of 23 chromosomes except the gametes or sex cells which are the egg and sperm cells which have only one set of 23 chromosomes also called haploid.
Meiosis occur when haploid gametes are created from a diploid cell. In meiosis, chromosomes separate to produce four gametes, all haploid.
The failure of these chromosomes to separate normally, is called nondisjunction.
Nondisjunction refers to the failure of chromosomes to separate during meiosis, resulting in an abnormal number of chromosomes in the resultant gametes. It can occur in either meiosis I or II, with differing results, including the formation of aneuploid gametes which are linked to a variety of genetic disorders.
Explanation:The failure of chromosomes to separate during meiosis is called nondisjunction. This can occur during either meiosis I or meiosis II with differing results. If homologous chromosomes fail to separate during meiosis I, the result is two gametes that lack that particular chromosome and two gametes with two copies of the chromosome. If sister chromatids fail to separate during meiosis II, the result is one gamete that lacks that chromosome, two normal gametes with one chromosome copy, and one gamete with two chromosome copies.
Nondisjunction leads to the formation of aneuploid gametes, which carry an abnormal number of chromosomes and are often associated with conditions such as Down syndrome or Turner's syndrome. Notably, nondisjunction contributes to aneuploidy, which is characterized by a change in the number of chromosomes in the cells. This results in the deviation from the normal diploid number and can potentially lead to numerous genetic disorders.
Learn more about Nondisjunction here:https://brainly.com/question/793463
#SPJ6
Match the following vocabulary words with their definitions. 1. The belief that life started and has progressed solely by natural chemical processes interrelated 2. Qualities of your body that you get (genetically) from your parents DNA 3. Twisted strand of molecules in a cell nucleus containing genes and hereditary information heredity 4. Any number of items, functions or purposes which are dependent upon each other function 5. The purpose or job evolution
Explanation:
Evolution is how a species changes over many generations. A species is all the animals of one particular kind, like cats or turtles. Members of the same species can have babies with each other. A species evolves when parents pass down helpful traits to their children. A trait is anything about the animal. For example, some cats have long hair and some cats have short hair. When cats with long hair have babies, their babies also have long hair. Heredity alludes to the hereditary legacy went somewhere around our natural guardians. It's the reason we appear as though them! All the more explicitly, it is the transmission of characteristics starting with one age then onto the next.DNA stands for deoxyribonucleic acid. In eukaryotic organisms, such as animals, plants, and fungi, the DNA is stored inside the cell nucleus and in the chromosomes. Prokaryotes (bacteria) store their DNA only in the cytoplasm within their cells. This master molecule, the DNA, is the perfect hiding place for biological or genetic information.Any number of items, functions or purposes which are dependent upon each other function are interrelated to each otherThe purpose of evolution is known as the function
Which comic book featured the first appearance of iron man?
I think it is in Tales of Suspense #39 that the cover dated March 1963. May 1968 Iron Man #1 received its own title.
Answer:
the comic book was called Tales of Suspense #39
Which structures are responsible for the movement of white blood cells to engulf infectious bacteria?
Answer:
is answer D
Explanation:
The structure that is responsible for the movement of white blood cells to engulf infectious bacteria is - Microfilament.
Microfilaments are the narrowest type of cytoskeleton fibers. The function is the movement, provides rigidity and shape. These filaments are made of two intertwined strands of a globular protein called actin.
They can depolymerize and reform quickly allows the cell to change its shape and move.White blood cells make good use of this ability.They can move to the site of infection with the help of microfilament and phagocytize the bacteria.White blood cells move from blood to the site of infection.The movement of WBC is assisted by the polymerization and depolymerization of microfilaments.Thus, the structure that is responsible for the movement of white blood cells to engulf infectious bacteria is - Microfilament.
Learn more about:
https://brainly.com/question/13823438
Interestingly, ____________ do not directly attack nor destroy any pathogens, rather they bind to pathogens and in doing so render them incapable of causing an immune response.
Answer:
antibodies
Explanation:
Antibodies are soluble mediators of the immune system.
They are also known as immunoglobulins and are bifunctional molecules.
They consist of polypeptide chains with an antigen binding site and a site that carries out the biological activity of the molecule.
Antibodies are expressed on the cell surface of B cells. When these B cells are stimulated by antigen, they differentiate into antibody-secreting plasma cells. The antibodies secreted then serve as effector molecules for cells functioning in the innate and/or adaptive immune systems.
For example, particular antibodies trigger the activation of the classic complement pathway.
Franklin is giving a speech at a medical convention. He understands that his audience cares deeply about saving lives. His audience believes that every cost should be considered when human lives are at stake. He is speaking to them about a new medical technology that can save lives. Which part of this description speaks of audience values?
Answer:
He understands that his audience cares deeply about saving lives.
Explanation:
Medical convention are supposed to fulfill a critically important role in the ongoing education of physicians, technicians, nurses, and other health care providers.
In this instance, Franklin is addressing an audience who cares about saving life and are ready to use the best technology to save lives in their various ways and this is why they are present at the convention.
Completed QUE;
Franklin is giving a speech at a medical convention. He understands that his audience cares deeply about saving lives. His audience believes that every cost should be considered when human lives are at stake. He is speaking to them about a new medical technology that can save lives. Despite this, his audience is distracted by the view from a large window that looks out on the hotel pool. Which part of this description speaks of audience values?
Answer.
He understands that his audience cares deeply about saving lives.
Explanation:
His audience by listening to his speech and looking out towards the large pool were trying to relate his speech, and the application of the new medical technology, to accident that may occur assuming someone drown in the pool.
Hotel pool is synonymous with accidental drowning.Thus in this case they were tried to envisage how the speech, and technology may provide a collective safety method to save lives,
__________ are water-soluble, complex glycoproteins that are secreted by goblet cells.__________ are water-soluble, complex glycoproteins that are secreted by goblet cells.AlbuminKeratinCollagenProteoglycanMucin
Mucins are water-soluble, complex glycoproteins that are secreted by goblet cells.
Explanation:
Goblet cells, named after their goblet-like shape, are usually found in the epithelium of respiratory and intestinal tracts in the body. Their main function is to produce mucus (primarily made up of mucins), a slippery combination of proteins, water and sugars, that serves three main functions:
The barrier function: By trapping the unwanted/harmful particles that we inhale and preventing them from entering our system.The protection function: By keeping the hair-like cilia lubricated and moist to remove the harmful particles.The defence function: Mucus is made up of certain enzymes, antibodies and proteins that act as a defence mechanism for the body.A unique property of mucins is their capability to form gels - sticky and viscous substances that work both as lubricants as well as defensive chemical barriers in the body.
Mucins are complex glycoproteins secreted by goblet cells. They form a protective layer over epithelial tissues, safeguarding them from harmful particles.
Explanation:Mucins are the water-soluble, complex glycoproteins that are secreted by goblet cells. Goblet cells are found in various tissues in the body including the respiratory tract, intestines, and conjunctiva of the eye. These cells secrete mucins, which are incredibly large and complex proteins, to create a protective mucous layer over the epithelial tissues. The primary function of this secreted mucus is to protect these tissues from bacteria, dust, and other particles that may cause harm.
Learn more about Mucins here:https://brainly.com/question/31834939
#SPJ12
If the base sequence of one strand in a DNA molecule is GACACATAGCAC, then the base sequence of the other strand must be: Please choose the correct answer from the following choices, and then select the submit answer button. CTATGAATAGTA TCACACGCTACA. CTGTGTATCGTG. AAATTTCCCGGG GACACATAGCAC.
Answer:
CTGTGTATCGTG
Explanation:
According to the rule of complementary base pairing proposed by Erwin Chargaff, the Adenine binds the Thymine and the Cytosine binds the Guanine.
In the given question,
if the base sequence of one strand will be- GACACATAGCAC
The complementary strand will be- CTGTGTATCGTG.
This option is chosen as this option fits the complementary base pairing rule and the is the most appropriate option.
Thus, CTGTGTATCGTG is correct.
Which of the following is NOT a major difference between DNA and RNA? RNA is only associated with coding parts of the genome. Uracil replaces thymine in RNA. RNA is single stranded and DNA is double stranded. RNA is much more structurally stable than DNA.
Answer:
RNA is much more structurally stable than DNA.
Explanation:
Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA) are both nucleic acids made up of nucleotide subunits and contains the genetic information of living cells. However, there are few structural and functional differences between them.
Firstly, RNA is a single stranded molecule as opposed to DNA that is a double helical structure consisting of long chains of nucleotides.
Secondly, the nucleotide that makes up both nucleic acids contains nitrogenous bases in its structure. These nitrogenous bases are four viz: Adenine, Guanine, Thymine, and Cytosine. Thymine in the DNA is replaced by Uracil in the RNA molecule.
Also, only the coding parts of the gene are transcibed into a mature RNA. Other non-coding regions are removed during post-transcriptional process. DNA contains both the coding and non-coding regions of the genome.
The answer is D because, DNA is a more structurally stable molecule than RNA. Hence, it can serve as a storage material for genetic information as opposed to the short-lived RNA that is only used to convey the information.
RNA is much more structurally stable than DNA.
The statement that "RNA is much more structurally stable than DNA" is inaccurate. In fact, DNA is generally considered more structurally stable than RNA. The structural stability of nucleic acids is influenced by their composition and the type of bonds present. DNA is a double-stranded molecule with a stable helical structure, and the presence of thymine instead of uracil contributes to its stability. The hydrogen bonding between adenine and thymine (A-T) and cytosine and guanine (C-G) in DNA forms a strong and stable double helix.
On the other hand, RNA is typically single-stranded and contains uracil instead of thymine. The absence of a second strand and the presence of uracil make RNA more susceptible to structural instability. Additionally, RNA is more prone to hydrolysis and degradation due to the presence of the 2'-hydroxyl group in its ribose sugar.
For more questions on RNA
https://brainly.com/question/28073947
#SPJ3
Urinary tract infections are commonly caused by Staphylococcus saprophyticus and Escherichia coli, less commonly caused by Proteus mirabilis. You have a mixed culture of these pathogens, which you inoculate onto both MacConkey agar and nutrient agar, and then you incubate the plates at optimal growth conditions. On the MacConkey agar, E. coli appears pink, P. mirabilis appears colorless, and S. saprophyticus does not grow. All three microorganisms appear cream on the nutrient agar plate. What is the best explanation for this data?A. MacConkey agar is a selective medium whereas nutrient agar is a differential medium.
B. MacConkey is both a differential and a selective medium.
C. Nutrient agar is both a selective and differential medium.
D. MacConkey agar is a differential medium, whereas nutrient agar is a selective medium.
Answer:
B. MacConkey is both a differential and a selective medium.
Explanation:
Selective media contain the ingredients that allows for the growing of specific microbes while inhibiting the others.
For example MacConkey media facilitate the growth of gram negative bacteria and inhibit the growth of gram positive bacteria. That why E. coli and P. mirabilis grew on the media because these are gram negative and S. saprophyticus does not grew being gram positive.
Differential media allow to differentiate between selected microbes by visual observation.
For Example MacConkey media differentiate between organisms that can ferment lactose to the organisms that can't ferment it. That why E. coli appeared pink on the media because it can ferment lactose while P. mirabilis appears colorless because it usually cannot ferment lactose.
Final answer:
MacConkey agar is both selective and differential because it inhibits gram-positive bacteria and distinguishes between lactose fermenters and non-fermenters, while nutrient agar is neither selective nor differential, and supports the growth of a wide variety of bacteria. So the correct option is B.
Explanation:
The best explanation for the data where E. coli appears pink and P. mirabilis appears colorless on MacConkey agar, while S. saprophyticus does not grow, and all three microorganisms appear cream on the nutrient agar plate is option B: MacConkey is both a differential and a selective medium.
MacConkey agar contains bile salts and crystal violet, which inhibit the growth of many gram-positive bacteria and favor the growth of gram-negative bacteria, making it selective. As for its differential property, the agar includes lactose and a pH indicator that identifies lactose fermenters by turning pink due to the acidic by-products of fermentation, while non-fermenters remain colorless.
In contrast, nutrient agar is neither selective nor differential. It supports the growth of a wide range of bacteria without distinguishing between different types or species, which is why all three organisms appear cream-colored on this medium.
I believe the answer is "B". Please correct me.
Which list below describes a possible path of rain through the water cycle?
Select one:
a. Evaporation, condensation, precipitation, runoff
b. Runoff, ocean storage, evaporation, condensation
c. Transpiration, condensation, precipitation, runoff
d. Evaporation, precipitation, runoff, lake storage
Answer: The only logical correct answer is "B".
Explanation: Given the fact that the question asks for the path of rain. Rain = Precipitation, thereofer being step 1.
After precipitation (given on the question) the logical path would be to: become a runoff after it rains, then it somehow ends up at the ocean which becomes stored until it evaporates, and condensates again. after this the cycle starts again.
Endosymbiotsis can best be described as Question 1 options: how a multicellular organism uses cell division to grow one organism living completely inside another organism two organisms occupying the same type of environment many cells of one type of organism living closely together
Answer:
Endosymbiosis can best be described as one organism living completely inside another organism.
Explanation:
Endosymbiosis is referred to a mutually beneficial relationship between two organisms where one organism lives completely inside another organism. The organism which lives inside another one is known as an endosymbiont.
According to the endosymbiotic theory, all eukaryotic cells are evolved from early prokaryotes. Eukaryotes engulf prokaryotic cells capable of aerobic respiration by phagocytosis. The engulfed prokaryotic cells remain undigested and contribute new functionality such as energy production, photosynthesis, etc to the host cell. Eventually, the engulfed cell became an organelle. The organelles such as mitochondria and chloroplasts in eukaryotic cells are considered to have arisen through endosymbiosis.
One example of endosymbiosis includes the relationship between legumes and nitrogen-fixing bacteria (endosymbiont) that live in the root nodules of legumes. The nitrogen-fixing bacteria helps the plants to absorb nitrogen from the soil and plants provide food for the bacteria. The other examples include the relationship between termites and the microorganisms in its gut, single-cell algae living inside corals, etc.