Answers
point D is carrying capacity.
b) point D is carrying capacity. the fill carrying capacity like is at the same height as point d therefore that is correct.
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what characteristics do non perching birds have in common with tropical birds and owls
A. Hooked beaks
B.Brightly colored feathers
C. Zygodactylous
D. Exceptional night vision
Answers
Answer:
Your answer would be (A). Hope this helps! <33
Answer:
The best answer choice for the question: What characteristics do non-perching birds have in common with tropical birds and owls, would be, A: Hooked beaks.
Explanation:
According to research done, this is probably one of the only commonalities between birds from tropical regions, like parrots, or cockatoos, and non-perching birds like the birds of prey, both diurnal and nocturnal, which are the eagles, owls, hawks, and others. In all of them, what can be found in common is that they tend to have beaks that are shaped hooklike, and are very strong, giving them the capacity to catch strong prey and be efficient hunters.
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Which of these factors is a disadvantage of hybrid cars?
A.) less gasoline required
B.) high purchase price
C.) low emissions
D.) Federal incentives
Answers
Answer:
B.) high purchase price
Explanation:
The hybrid cars are the newest models of cars that are much more environment friendly. They have been heavily promoted, and lot of people do want to have them instead of the traditional cars. The main reason why people are attracted to them is because these cars pollute little to nothing, so compared with the gasoline driven cars that pollute a lot, they are a much better choice for everyone that wants to contribute to the preservation of the environment. The big problem in all of this, and why these cars haven't been selling massively, is that they are much more expensive than the other cars. The majority of the people are just not able to afford them, so despite having a good thought about the environment, and wanting to help, they can not buy these cars.
Answer:
A. Costs a lot initially
If you study ecology what are you studying
Answers
Answer:
If you study ecology then you are studying plants
Ecology is the study of life.
Protein synthesis is compared to baking a cake in the textbook, but the process can also be compared to building a doghouse. sondra wanted to build a doghouse and found a book in the reference section in the local library. she copied the pages of directions using wood and nails to make the doghouse. taking the directions to her workbench, sondra used a hammer to put nails into their correct positions in the wood to make the doghouse. in the story, what genetic structure would be analogous to the copies from the reference book?
Answers
Answer:
Copying the book would be analogous to transcription
Explanation:
The copies made from the copying process would be analogous to mRNA. Taking the copy to a workbench would be analogous to the mRNA moving from the nucleolus to the ribosomes in the cytoplasm. The actual building of the dog house would be analogous to the ribosome assembling up the protein using amino acids. Following the instructions of the copy would be analogous to the ribosome reading the codons and bringing in the respective amino acids.
Which of the following is not a factor that impacts the stability of a society?
a.
population size
b.
resource availability
c.
management practices
d.
available money
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
Option D. The available money is not a factor that impacts the stability of a society.
Explanation:
Social stability is a condition that all of societies aspire to, as the opposite condition known as social instability leads to conflicts between diverse internal groups within a community. The stability of a society will be affected and, in some way relies, upon its population size, the availability of resources, and how the society manages its diverse practices. although money is a factor that can affect the stability of a society, it is not the available money that does so. There a plenty of societies that are not stable enough, that in theory have sufficient money available to be stable. Societies can print large amounts of money and still be unstable, as the value of money is affected by diverse factors.
The descriptions below explain two ways that water is used by plants on a sunny day.I. In a process called transpiration, some liquid water in leaves changes to water vapor. The water vapor is released into the air through tiny pores in the leaves. This allows more liquid water from the soil to be pulled up the roots and stem to replace water lost from the leaves.II. Plants use some of this water in leaves in a process called photosynthesis. During photosynthesis, water and carbon dioxide break apart and recombine to form two new substances, oxygen and glucose.Based on the above description of transpiration and photosynthesis, which type of change happens to water during each process?
Answers
Answer:
The answer would be A.
Explanation:
I. In a process called transpiration, some liquid water in leaves changes to water vapor. The water vapor is released into the air through tiny pores in the leaves. This allows more liquid water from the soil to be pulled up the roots and stem to replace water lost from the leaves. So A would the correct answer. I also got it right in my quiz
During photosynthesis, within the plant cell, the water is oxidized as it loses electrons. This transforms the water into oxygen.
During transpiration in plants, the water eventually released to the atmosphere as vapor via the stomata present in leaves.
What is transpiration?It is the process of water loss in plants through evaporation from the stomata of plants.
During transpiration, the water near the surface of the leaves changes into vapor and evaporates when stomata are open.
Transpiration provide the water needed to plants for photosynthesis.
During photosynthesis below reaction takes place, where carbon dioxide and water under the sunlight converted into glucose and oxygen.
6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂
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A prokaryotic cell is being looked at under the microscope and a scientist is watching molecules such as sodium enter and exit the cell. What part of the prokaryotic cell is being looked at under the microscope? A. DNA B. Cytoplastic membrane C. Plasma membrane D. Cell wall
Answers
if sodium entering and exitting the cell is observed, then it is clear that the cytoplasmic membrane is being looked at under the microscope.
Answer:
C. Plasma membrane
Explanation:
Plasma membrane is bilayer of phospholipids in which proteins are embedded. It serves as selectively permeable membrane and regulate the entry and exit of various molecules in and out of the cell. Hence, the observer is looking at the plasma membrane of the prokaryotic cell through which transport of sodium ion is occurring.
In northeast kansas there is a creature know as a wildcat. it comes in three colors, blue, red, and purple. this trait is controlled by a single locus gene with incomplete dominance. a homozygous (bb) individual is blue, a homozygous (bb) individual is red, and a heterozygous (bb) individual is purple. what would be the genotypes and phenotypes of the offspring of a blue wildcat were crossed with a red one
Answers
Answer:
The genotype would be bb and the phenotype would be purple.
Explanation:
It wouldn't be red or blue because those genotypes are homozygous. Which means everything s the same. One purple wildcat offspring would have a purple father and mother. But since a blue and red wildcat are mating that makes the genotype heterozygous. Which would be purple.
Incomplete dominance occurs when both the alleles of the genes at a specific locus are characterized partly.
This type of dominance occurs when neither of the alleles is entirely recessive nor dominant.
The allele for the blue trait is purebred dominant (BB)
The allele for the red colour trait is purebred recessive (bb)
The allele for the purple colour is heterozygous (Bb)
The genotypes and phenotype of the offspring of a blue wildcat crossed with a red cat can be determined with the help of Punnett square. The image of Punnett square is attached below.
Therefore, the genotype of the offspring will be Bb.
The phenotype of the wild cat will be Purple.
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A disease in which the bones become abnormally soft due to a deficiency of calcium and phosphorus in the blood (which is necessary for bone mineralization) is known as:
Answers
Answer:
osteomalacia
Explanation:
Osteomalacia is the disease in which bones become abnormally soft, mainly due to a deficiency of calcium and phosphorus, usually related to a vitamin D deficiency, and can increase the risk of developing osteoporosis.
The disease in which the bones become abnormally soft due to a deficiency of calcium and phosphorus in the blood, necessary for bone mineralization, is known as osteomalacia. In adults, this condition is often caused by a vitamin D deficiency, leading to reduced bone mineral density and an increased risk of osteoporosis. While osteoporosis involves the bones becoming brittle, fragile, and thin, often resulting from a lack of calcium in the diet, osteomalacia specifically refers to the softening of the bones. Rickets is a similar condition that affects children and is also most commonly caused by a lack of vitamin D, but can also stem from deficiencies in phosphorous or calcium.
Considering only the unlinked gene loci a and b, how many different kinds of gametes can an individual with genotype aabb produce
Answers
Only one kind of gamete(ab)
Explain what happened to the original city of Valdez, Alaska. (2 points)
Answers
Answer: Old town Valdez, AK was originally built on unstable land. On March 27, 1964 (Good Friday), an 9.2 earthquake erupted 45 miles west of the town. The earthquake caused many landslides and loosened the already unstable soil under the city
The ‘filtering factories’ of the excretory system are called ___.
a. rectum.
b. alveoli.
c. nephrons.
d. bronchi.
Answers
Option “C” is correct: Nephrons
Answer: it is nephrons on edg
Explanation: I know
arrange the steps of a G-protein signal transduction in the order that they occur.a. The G protein dissociates from the receptor.b. The G protein activates an effector protein, leading to a cellular response.c. A signal molecule binds to the receptor activating it.d. The G Protein is activated by the dissociation of GDP and binding of GTP.e. The receptor changes conformation and binds an inactive G Protein.
Answers
The steps of a G-protein signal transduction occur in the following order: a signal molecule binds to and activates the receptor, the receptor changes conformation and binds an inactive G Protein, the G Protein is activated by the dissociation of GDP and binding of GTP, the G protein dissociates from the receptor, and finally, the G protein activates an effector protein, leading to a cellular response.
Explanation:G-protein signal transduction is an important biological process that occurs in response to a specific signal molecule. The steps of this process, in the order that they occur, are:
A signal molecule binds to the receptor, activating it (c).
The receptor changes conformation and binds an inactive G Protein (e).
The G Protein is activated by the dissociation of GDP and binding of GTP (d).
The G protein dissociates from the receptor (a).
The G protein activates an effector protein, leading to a cellular response (b).
Each of these steps are integral to the signaling process and ensure that the cell responds appropriately to external signals.
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n the earliest stages of development the embryos of a fish, calf, human, and tortoise all look similar. In the next stage the calf and the human look most alike. What assumption can be made based on this similarity?
A) The fish is not related to the calf.
B) The fish is not related to the human
C) Of the four organisms, the calf and human are least related.
D) Of the four organisms, the calf and human are most closely related.
Answers
Answer:
D) Of the four organisms, the calf and human are most closely related.
Explanation:
According to biogenetic law, stages of embryological development of an organism recapitulates its evolutionary history. The shared characters are exhibited by early embryological stages of various species while the derived features appear in later stages. Since the calf and the human embryo resemble during later stages of embryological development, they are most closely related to each other.
Answer:
The calf, human and tortoise are more closely related to one another than the fish.
Explanation:
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Derek works in a municipal wastewater treatment plant where he oversees the process of biological treatment. Which stage of municipal wastewater treatment does Derek oversee?
Answers
Answer:
Tertiary Treatment stage
Explanation:
There are basically four stages of treatment of sewer/waste water
a) Screening stage – In this stage of treatment, large objects and garbage is removed from the waste water through the use of grit removal equipment
b) Primary treatment stage (Physical treatment)
Physical processes such as aeration, filtration, sedimentation etc. are used to remove the impurities from waste water after the screening stage
c) Secondary treatment stage (Chemical Treatment)
In this stage chemicals are used to coagulate tiny impurities into larger mass so that they can be easily removed through the process of sedimentation, filtration etc.
d) Tertiary treatment stage (Biological Treatment)
In this stage, waste is acted upon by microorganisms that work either in the presence or absence of oxygen to remove organic impurities from the waste water.
Thus, Derek saw the process of municipal wastewater treatment plant at the tertiary stage of waste water/sewer treatment.
Answer:
secondary treatment
Explanation:
I just did the test
Which of the following is not transported by the circulatory system?
A. Blood
B. Food
C. Oxygen
D. Carbon dioxide
Which of the following would not be considered an innate behavior?
A. Sucking
B. Migration
C.habituation
D. Instincts
The brain is apart of which body system?
A. Nervous system
B. Immune system
C. Circularity system
D. Respiratory system
Answers
Answer:B)food
everything else is transported from those options except food. Hopefully this is right.
Food is not transported by the circulatory system.
What is circulatory system ?The system that contains the heart and the blood vessels and moves blood throughout the body.
What is circulatory system parts and functions?The circulatory system is made up of blood vessels that carry blood away from and towards the heart.
Hence ,B is correct option
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What stimulates the ribosome to move down one codon?
Answers
Answer:
The chain moves from the 5' - 3' direction caused by the use of GTP and several protein-enzyme complexes. As the polypeptide chain is produced the t-RNA move from site A to site P, and then are released into the cytoplasm. The polypeptide chain continues to grow, and is held to the ribosome by the t-RNA at the P site.
Explanation:
The ribosome moves down one codon during the translation process in protein synthesis through translocation, which is powered by GTP hydrolysis and the action of EF-G. This step is crucial for the ribosome to read mRNA and synthesize proteins accordingly.
Explanation:What stimulates the ribosome to move down one codon is a process called translocation, which is an essential part of the translation phase of protein synthesis. During translocation, the ribosome moves along the mRNA molecule towards the 3' end by a distance of one codon (three nucleotide bases). This movement is facilitated by the hydrolysis of Guanosine triphosphate (GTP) and requires the action of elongation factor-G (EF-G), also known as translocase. As a result of this, the tRNA that was in the A site moves to the P site, carrying the growing polypeptide chain, and the deacylated tRNA in the P site moves to the E site and is then released into the cytosol.
At the end of the translation process, when a stop codon is reached, release factors will bind, causing the polypeptide to be released and the ribosomal subunits to disassociate. The ribosome can then be reassembled for another round of protein synthesis.
What is the study of the harmful effects of chemicals on humans and other organisms?
Answers
Answer:
Toxycology
Explanation:
Toxycology includes:
the study of harmful (adverse) chemicals on living organismsdiagnosis of harmful chemicalstreatment of exposure to harmful chemicals such as toxinsFactors that determine the toxicity of a chemical for an organism are dosage, age, environment, species...
In what ways might the use of embryonic stem cells be better than the use of adult stem cells
Answers
Answer:
Embryonic stem cells have a larger differentiation potential than adult stem cells
Explanation:
This is because embryonic stem cells can develop in any other type of differentiated cell type in the body (pluripotent), while adult stem cells are limited in that way (multipotent or unipotent). So, we can say that embryonic stem cells are more flexibile.
Another advantage of the embryonic stem cells is that they are more easily grown in culture.
Embryonic stem cells- derived during early development
Adult stem cells-derived from adult tissue
Scientists use scientific notation to represent very small or very large numbers because this notation increases the
accuracy of measured quantities.
convenience in using the numbers.
number of significant figures.
precision of measurements.
Answers
Answer:
convenience in using the numbers.
Explanation:
Very small numbers have too many digits, similar to large numbers.
This numbers can take too much space and therefore cause inconvenience during recording or calculation.
To avoid this inconvenience, scientists use scientific notations in representation of this numbers.
Some examples of the notations are:
10000 = 1 x 1041000 = 1 x 103100 = 1 x 10210 = 1 x 101Answer:
Explanation:
Scientists use scientific notation to represent very small or very large numbers because this notation increases the
accuracy of measured quantities.
convenience in using the numbers.
number of significant figures.
precision of measurements.
The Meselson-Stahl experiment provided the necessary evidence to discover the mechanism by which DNA replicates. They accomplished this discovery by first culturing DNA with the heavy 15N nitrogen isotope. They then allowed the "heavy" DNA to replicate with DNA grown in normal 14N nitrogen. The density of each generation of replicated DNA was recorded by marking its position in a test tube after centrifugation. The position of each generation was then compared to the positions of pure 15N DNA and pure 14N DNA. Suppose that the first generation after replication revealed two bands after being centrifuged: one at the pure 14N mark, and one at the pure 15N mark. Which method of replication would this observation support? (2 points) A. Dispersive replication B. Conservative replication C. Semiconservative replication D. Another generation would be needed in order to find a viable mechanism
Answers
Answer:
C. Semiconservative replication
Explanation:
Semiconservative replication is a mechanism of replication. Semiconservative model of replication states that in daughter cell, with new double-stranded DNA (cell after replication and mitosis) one strand is from the original template molecule while other is newly synthesized.
This is possible thanks to complementary pairing in DNA (each original strand of double-helix DNA is used as a template for the synthesis of the new strand).
The scenario presented in the question supports the Conservative replication model of DNA replication. In this model, the original DNA strand remains intact, and a completely new strand is synthesized. However, in the actual Meselson-Stahl experiment, they observed support for Semiconservative replication.
Explanation:The observation described in the question would support the Conservative replication model of DNA replication. According to the Conservative replication model, the parental DNA strand remains intact, and an entirely new strand is synthesized. Thus, after one round of replication, you would observe one band of DNA at the 15N position (the original, 'heavy' parental molecule) and a separate band at the 14N position (the completely new molecule).
The Meselson-Stahl experiment is a classic in molecular biology, used to elucidate the mechanism by which DNA duplicates itself. The result described isn't what they observed, though, rather they saw a single band intermediate between 15N and 14N after the first replication, supporting the idea of Semiconservative replication: each new DNA molecule consists of one old strand and one new strand.
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Which of the following is an example of hydrolysis?
A. Because of a reaction with acid rain, sandstone develops black surface deposits.
B. Because of a reaction with water, feldspar is changed into clay minerals.
C. Because of a reaction with carbonic acid, limestone is dissolved.
D. Because of a reaction with oxygen, iron changes into rust.
Answers
B because in hydrolysis, water is used in order to break things apart. The only reaction here that has only water breaking things apart is B. (A has acid rain which has other chemicals, C has carbonic acid, D is with just oxygen)
Answer: B. Because of a reaction with water, feldspar is changed into clay minerals.
Explanation:
Hydrolysis is defied as the chemical breakdown of a substance when it is made to react with water. The word hydro means water, and the word 'lysis' mean to break down.
Water seeps down into the ground and comes in contact with the feldspar contained in the granite and convert it into clay particles which weaken the rock.
A. Because of a reaction with acid rain, sandstone develops black surface deposits is an example of carbonation.
C. Because of a reaction with carbonic acid, limestone is dissolved is also an example of carbonation.
D. Because of a reaction with oxygen, iron changes into rust is an example of oxidation.
The excretory system rids the body of toxic chemicals, excess water, salts, and carbon dioxide while maintaining osmotic and ph balance. which three organ systems combine to form the excretory system?
a. digestive system, muscular system, respiratory system
b. integumentary system, respiratory system, urinary system
c. circulatory system, endocrine system, integumentary system
d. circulatory system, digestive system, urinary system
Answers
I feel like it would be b
In addition to being a component of the integumentary system, the skin contributes to excretion through the production of sweat by sweat glands in the dermis, hence option B is correct.
What is the excretory system?The excretory and urinary systems are not the same because the excretory system is a collective term for all systems performing the function of removing waste from the body, such as excess water, urea, carbon dioxide, and lactic acid.
Whereas the urinary system focuses on removing excess water and urea from the body. Nevertheless, other organs also play a part in excretion.
Water and carbon dioxide are two waste products that are expelled by the lungs as part of the respiratory system. Another excretory organ that eliminates waste from the body through sweat glands is the skin.
Therefore, the integumentary system, respiratory system, and urinary system are three organ systems that combine to form the excretory system.
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Elephants are not the most abundant species in African grasslands, yet they influence community structure. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. Take away the elephants, and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grasslands. Why elephants are the keystone species in this scenario?
Answers
Answer:
E) Elephants help other populations survive by repelling many large African predators
Explanation:
Elephants are large mammals. Elephants in Africa have a height of 4 meters and weigh up to 7 tons.
The role of elephants in the ecosystem is very important especially its impact both directly and indirectly on the environment. With a large size and height, other predatory animals such as lions, tigers, coyotes, hyenas do not want to get close to elephants. Elephants are animals that prefer to group. While still breastfeeding will be very protected by the mother for up to 3 years. Elephants have an average age of up to 70 years. Perhaps very few elephants have fallen prey to predators. Thus elephants are animals that indirectly protect other animals in Africa. Things like this also indirectly make grasslands become more fertile and other animal species also become more numerous.
So the most appropriate answer is E. E) Elephants help other populations survive by repelling many large African predators
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Class : Senior High
Subject : Biology
Keywords
- Elephants
- Ecosystem
Elephants are not the most dominant species in African grasslands, yet they influence community structure. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. Take away the elephants, and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grasslands. Which of the following describes why elephants are the keystone species in this scenario?
A) Essentially all of the other species depend on the presence of the elephants to maintain the community.
Explanation:Shrubland is a plant community characterized by vegetation dominated by shrubs. According to this scenario, elephants are the keystone species because they have great affect on their ecosystem, and without them, the ecosystem would change or suffer
Which of the following describes why elephants are the keystone species in this scenario?
A) Essentially all of the other species depend on the presence of the elephants to maintain the community. B) Grazing animals depend upon the elephants to convert forests to grassland. C) Elephants prevent drought in African grasslands. D) Elephants are the biggest herbivore in this community. E) Elephants help other populations survive by keeping out many of the large African predators.Learn more about elephants https://brainly.com/question/14022088
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Help please! Science.
Systems thinking focuses on
A. only the parts of the system, not the collective effect.
B. exclusively on how ecosystems interact with the environment
C. the ways in which systems interact with the environment
D. the role of individual elements and their releationship with others in the system.
Positive feedback in a system is.
A. words of praise
B. a benefit for the entire system
C. an interaction that benefits one element.
D. an event that benefits on part while weakning another
Why does social science inersect with marine science?
A. many poems and novels are written about the ocean
B. Human behavior causes a lot of issues with the ocean.
C. Social science is another important branch of the sciences.
D. These are very different disciplines that have little connection.
Answers
Systems thinking focuses on the role of individual elements and their relationship with others in the system.
1. Systems thinking focuses on the ways in which systems interact with the environment.
2. An event that benefits one part while weakening another.
3. Human behavior causes a lot of issues with the ocean.
1. Systems thinking focuses on the ways in which systems interact with the environment. Therefore option C is correct.
Systems thinking is an approach that emphasizes understanding and analyzing systems as a whole, rather than focusing solely on the individual parts.
It recognizes that systems are composed of interconnected elements that interact with each other and their environment and that understanding these interactions is essential for understanding the behavior and dynamics of the system as a whole.
2. An event that benefits one part while weakening another. Therefore option C is correct.
Positive feedback in a system refers to an interaction or process that amplifies or reinforces a certain condition or behavior within the system. It is characterized by a chain reaction where the initial change leads to further changes that intensify the original condition.
Unlike negative feedback, which tends to stabilize or balance the system, positive feedback drives the system toward a specific direction or outcome.
3. Human behavior causes a lot of issues with the ocean. Therefore option B is correct.
Social science intersects with marine science because human behavior plays a significant role in influencing and impacting the oceans.
The study of marine science focuses on understanding the physical, chemical, biological, and ecological aspects of the ocean and its ecosystems.
However, human activities, such as pollution, overfishing, habitat destruction, and climate change, have profound effects on marine ecosystems.
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Different body cells can respond differently to the same peptide hormones because _____.
A. different target cells have different sets of genesB. the hormone is chemically altered in different ways as it travels through the circulatory systemC. the circulatory system regulates responses to hormones by routing the hormones to specific targetsD. a target cell's response is determined by the components of its signal transduction pathways
Answers
Answer:
D. a target cell's response is determined by the components of its signal transduction pathways
Explanation:
Signal transduction pathway is a set of steps from the ligand binding (e.g. hormone binds to its receptor) to the cell response. The chain reaction that occurs after the ligand binding can include mechanisms such as phosphorylation, dephosphorilation, activation of messengers, degradation etc which together can make a whole huge network.
The cell response at molecular level can include change in gene expression (changes in transcription and translation), protein changes (conformational, post-translational modifications, change in location).
Different body cells can respond differently to the same peptide hormones because a target cell's response is determined by the components of its signal transduction pathways. Hence, the correct option is D.
. Although a hormone may travel throughout the body, only cells with specific receptors for that hormone can bind to it and initiate a response. This interaction then triggers a chain of events within the cell, leading to its response. Factors such as the number of receptors present (which may increase or decrease through upregulation or downregulation), the sensitivity of the receptors, and the specific signal transduction components available within the cell, all play crucial roles in determining how a cell responds to a hormone. This cellular diversity ensures that hormones can have varied effects on different types of cells, facilitating a wide range of physiological processes.
In recombinant DNA methods, the term vector can refer to _____.
Answers
Answer:
reverse transcriptase
In recombinant DNA methods, a vector is a DNA molecule that functions as a vehicle to carry foreign genetic material into a host cell. Vectors can be plasmids, viruses or artificial chromosomes, and must have the ability to replicate within host cells and contain recognition sites for restriction enzymes and selectable markers.
Explanation:In recombinant DNA methods, the term vector can refer to a DNA molecule used as a vehicle to artificially carry foreign genetic material into another cell, where it can be reproduced. Examples of vectors include plasmids, viruses, and artificial chromosomes such as yeast artificial chromosomes(YACs).
A vector must have three important characteristics: ability to replicate within host cells, recognition sites for restriction enzymes, and selectable markers which allow cells containing vectors to be selectively cultured.
It's the vector's ability to reproduce within the host cell that allows the foreign DNA to be replicated in the process. In other words, it's a medium through which we can produce multiple copies of a particular piece of DNA within a host organism. The DNA typically inserted into these vectors is often genes that a scientist wants to express (have the cell produce copies of them)
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1. Respiration begins with ____________. 2. Gas exchange is needed to provide cells with the ____________ they need for cellular respiration. 3. Tiny air sacs in the lungs are known as ____________. 4. Inhaling is an active movement that results from the contraction of a muscle called the ____________. 5. Asthma is a disease in which the air passages of the ____________ become narrow, often with excessive mucus production. 6. The ____________ is also known as the wind pipe. 7. Emphysema is usually caused by ____________ and is irreversible. 8. The ____________ is also known as the voice box. 9. The ____________ pumps oxygen-rich blood into arteries. 10. ____________ gas exchange is the exchange of gases between inhaled air and the blood. 11. ____________ is a disease in which some of the alveoli of the lungs fill with fluid so gas exchange cannot occur. 12. Oxygen ____________ from the peripheral capillaries into body cells.
Answers
I only answered some of them, the ones I knew for sure. Hope this helps
2. Oxygen.
3. Alveoli
4. Diaphragm
6. Trachea
8. Larynx
9. Heart
It is possible to produce an offspring from a zebra mating with a donkey. indeed, in the summer of 2012 in florence, italy, a male zebra climbed a zoo fence in order to mate with a female donkey. this resulted in the donkey giving birth to a live organism. however, this mating would not likely happen in the wild. which reproductive barrier would prevent this from occurring?
Answers
The mating of a zebra with a donkey is rare in the wild due to reproductive barriers such as character divergence and gametic barriers, which affect courtship, compatibility of reproductive structures, and potential genetic incompatibilities leading to issues like sterility.
Explanation:It is possible for a zebra to mate with a donkey, and such mating can produce live offspring, known as a zonkey. However, this occurrence is rare in the wild due to various reproductive barriers. One such barrier that would prevent a zebra and donkey from mating in the wild is character divergence, which impacts courtship rituals, potentially leading to differences in female preferences or male behaviors that are incompatible between species.
Other prezygotic barriers include differences in reproductive anatomy or physiology, where the reproductive structures might not be compatible (for example in damselflies), or gametic barriers where the sperm and egg cells are unable to fuse successfully. Postzygotic mechanisms could also be at play, such as genetic incompatibilities that lead to offspring with reduced or no fertility, like mules, which are the sterile offspring of a female horse and a male donkey.
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Scientists have recently devised a new six-kingdom classification of organisms. According to the cladogram for the six-kingdom system
A) the Eubacteria gave rise to all life on Earth.
B) the Archaebacteria gave rise to the eukaryotes.
C) the Archaebacteria are classified as eukaryotic.
D) only the bacterial kingdoms have a common ancestor.
Answers
According to the cladogram for the six-kingdom system;
B) the Archaebacteria gave rise to the eukaryotes.
All of the six kingdoms have common ancestors. First divergence gave rise to the Eubacteria and Archaebacteria. The other major branching gave rise to the ancestors of the four eukaryotic kingdoms.
New six-kingdom classification of organisms was recently devised by scientist, and according to the cladogram for the six-kingdom system, the Archaebacteria gave rise to the eukaryotes, that are in option B among all other options.
What is the six-kingdom classification?The six-kingdom classification is a system of organizing and classifying living organisms into six distinct groups such as mentioned here :archaea, bacteria, protista, fungi, plantae and animalia and each of them have unique characteristics. Bacteria are also known as eubacteria that are single-celled microorganisms that are found in most of the place, and others such as protista are eukaryotes and unicellular etc.
Hence, the correct answer here is that in six-kingdom classification, the archaebacteria gave rise to the eukaryotes that are in option B among all other options..
Learn more about the six-kingdom classification here.
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