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7nadin3 [17]
3 years ago
12

Where does the energy for active transport come from ?

Biology
1 answer:
Hatshy [7]3 years ago
4 0

Answer: It is from ATP

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2 years ago
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situations in which one allele for a gene is not completely dominant over another allele for that gene are called....
stiks02 [169]
This is called incomplete dominance. When an something is heterozygous for an incomplete dominant gene, the resulting phenotype will be somewhere between the two. For example if a plant has a tall allele and a short one, but neither shows complete dominance over the other, the plant height will be somewhere in the middle.
7 0
3 years ago
What is the basic difference in effector function between helper and cytotoxic T cells?
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Answer:

Helper T cells stimulate B-cells to produce antibodies and killer T cells to destroy the non-self cells. Cytotoxic T cells on the other hand are direct attack cells. They can kill the micro organisms by creating pores on the invader's cell.

Explanation:

T lymphocyte mediated immunity of cell mediated immunity do not secrete antibodies but they help stimulate the B cells to produce them. Immature T cells are produced in bone marrow from where they migrate to thymus via blood. In the thymus maturation of T cells occur and then they migrate to lymphoid tissue and get differentiated into three types:

a. Helper T cells: As the name suggests, they help in activating other immune cells, in other terms they are the regulator of virtually all functions of immune system. Protein mediator called lymphokines are produced by these helper T cells in order to regulate the immune functions. Some examples of these lymphokines are: Interleukin-2 interleukin-3, interferon gamma. T helper cells stimulate the B-cells to produce antibodies.

b. Cytotoxic cells or killer T cells: The lymphokine interleukin-2 is responsible for the growth and proliferation of both cytotoxic T cells and suppressor T cells. With the help of receptor proteins on the surface of killer T cells, they bind to the specific antigen. After binding, they secrete a pore forming protein called perforins which create pores on the invaders cell membrane for water to enter into it thereby cell swells and finally lyse.

c. Suppressor T cells: They suppress the function of above two T cells.

5 0
3 years ago
Two scientists wrote a paper detailing their research and conclusions and submitted it to a scientific journal. Several months l
Annette [7]
I think b is the answer 

hope this helps

5 0
3 years ago
If two different purebreds are crossed what type of traits will their hybrid offspring have?
Artemon [7]
Answer: Dominant and Recessive traits.

Explanation: I’m not for sure what the question is asking and my answer doesn’t make that much sense to answer the question but I know the offspring will have some form of dominant and recessive traits.
7 0
2 years ago
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