The primary function of plasma cells is to
A) secrete antibodies.
B) remember immune responses.
C) secrete cytokines.
D) protect phagocytes.
A) secrete antibodies.
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Starch, dextran, glycogen, and cellulose are polymers of
A) amino acids. B) glucose. C) fatty acids. D) nucleic acids. E) acids
TC cells express a(n) ________ protein co-receptor
A) CD4 B) CD8 C) IgM D) IgG
When a "new" antigen first challenges the immune system, if the primary immune response produces B cells, what are the fates of those B cells?
I-Some of the B cells become plasma cells that secrete antibodies. II-Some of the B cells become memory cells and can produce a swifter response if the body encounters that particular antigen again. III-Some of the B cells secrete chemicals called pyrogens that travel to the brain inducing a fever. A. just II B. just I C. II and III D. I and II E. I, II, and III
A rancher is suspected of shooting wolves near Yellowstone National Park, and you have been enlisted to go have a chat with him. The rancher doesn’t see any benefit to having the wolves there. What do you say?
A. "If there are no predators like wolves, just one pair of jackrabbits can quickly create a population with explosive, logistic growth. Wolves help reduce the fecundity rate, keeping the population at a reasonable level." B. "If there are no predators like wolves, just one pair of jackrabbits can quickly create a population with explosive, exponential growth. Wolves help reduce the carrying capacity, keeping the population at a reasonable level." C. "If there are no predators like wolves, just one pair of jackrabbits can quickly create a metapopulation. Wolves help reduce the biotic potential, keeping the population at a reasonable level." D. "If there are no predators like wolves, just one pair of jackrabbits can quickly create a population with explosive, density-dependent growth. Wolves help reduce the age structure, keeping the population at a reasonable level." Clarify question: What is the key concept addressed by the question? In this question you are being asked to explain the benefits of having wolves. What type of thinking is required? This is an analysis question, you will need to break the question down into its components in order to get to the answer. Gather Content: What do you already know about the benefits of wolves in a community? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?