?
Figure 37.12
Use the figure above depicting antigen processing to answer the following question.
The letter "B" from the accompanying figure represents ____.
A. complement
B. MHC markers with antigen expressed to the surface of a cell
C. lysosome with MHC molecule
D. plasma membranes fusing
E. MHC recycling
Answer: C
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Mendel selected pea plants for his experiments because ____
a. the offspring are infertile b. others were also using pea plants for their experiments and this would allow data sharing c. male and female flowers are on separate plants d. they can be self-fertilized or artificially fertilized by hand e. he was told by his superior that only pea plants were suitable for experimentation
A small number of cell surface receptors can ultimately generate a large intracellular response due to activation of kinase cascades. This is referred to as:
A. signal amplification. B. signal transduction. C. signal dampening. D. signal activation.
Differences in domesticated animals over relatively short periods of time most likely occur through:
A. natural selection B. artificial selection C. adaptation D. experimental selection E. evolution
Barnacles belong to which of the following groups of invertebrates?
a. crustaceans b. mollusks c. annelids d. chelicerates e. brachiopods