Which proteins puncture the membranes of infected target cells?
A. interleukin-2
B. MHC proteins
C. complement proteins
D. interleukin-1
E. perforins
Answer: E. perforins
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Sponges are most accurately described as _____
A) marine predators B) chemoautrophs C) freshwater scavengers D) suspension feeders E) aquatic predators
The conversion of phosphoenol pyruvic acid (PEP) to pyruvic acid results in the production of an ATP. This reaction is an example of (substrate-level/oxidative/reductive) phosphorylation
What will be an ideal response?
Which of the following statements about the oomycote algae is FALSE?
A) They form hyphae. B) They produce zoospores in a sporangium. C) They cause plant diseases. D) They have chlorophyll. E) They reproduce sexually.
Heterotrophs must obtain organic molecules that have been synthesized by
A. autotrophs. B. bacteria. C. biogeochemical cycles. D. decomposers.