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balu736 [363]
3 years ago
7

A biologist identifies a mutant line of mice that lacks the cellular immune response. She suspects that a mutation in these mice

affects the ability of host cells to carry out the antigen presentation step during the activation phase. What could the biologist do to test her hypothesis
Biology
1 answer:
Pepsi [2]3 years ago
5 0

Answer:

Isolate antigen-presenting host cells from mice known to have an intact cellular immune response and inject these into the mutant mice to see if the normal response can be restored.

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Mr. Jones, the science teacher, tells his students that energy cannot be created; it must be captured from the environment. He i
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<span>A: food chain

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Answer:

Things they have in common..

Explanation:

  • Non living things and living things are made up of matter.
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Answer:

Explanation:

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Estrogens from the vesicular follicle trigger an LH surge from the anterior pituitary. This is an example of: Estrogens from the
brilliants [131]

Answer:

The correct answer is: positive feedback.

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Positive and negative feedback are terms that are used to define the way a system is regulated by its products. For example, when the production of a certain substance <u>inhibits</u> its producer that is called <u>negative feedback</u>. On the other hand, when a substance <u>stimulates</u> its producer to keep secreting said substance, this is called <u>positive feedback</u>.

Estrogen is a hormone of great importance in the female reproductive cycle and is secreted by the follicle cells in response to the presence of FSH (follicle-stimulating hormone), released by the anterior pituitary when stimulated by the GnRH (gonadotropin-releasing hormone).

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