HIV virus particles that have evaded destruction by cytotoxic T cells persist in ________.
A. dendritic cells
B. helper T cells
C. basophils
D. memory B cells
E. cytotoxic T cells
Answer: B
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The final electron acceptor of the electron transport chain is:
A. oxygen. B. coenzyme Q. C. NAD+. D. ATP synthase. E. cytochrome C.
You raise several of the zygotes from question 22.3.1. They are fertile and produce viable offspring when bred with each other. Are these animals the same species as their parents (the frogs in the prior question)?
A. Yes, chromosome count has nothing to do with speciation. B. Yes, animals that are members of the same species commonly have very different chromosome counts. C. No, they are reproductively isolated from their parents by their different chromosome count. D. No, every species has a unique chromosome count (i.e., every species has a chromosome count that is different from every other species).
Characterize second messengers
What will be an ideal response?
A(n) ________ is an organism that lives on or within another without killing the host
Fill in the blank(s) with correct word