What type of exotoxin causes diarrhea
What will be an ideal response?
vibrio (cholera) toxin
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The major reason why there are fewer antiprotozoan drugs than antibacterial drugs is because
A. antiprotozoan drugs cost much more than antibacterial drugs to develop. B. antiprotozoan drugs are only effective when injected. C. it is much more difficult to develop selectively toxic antiprotozoan drugs since protozoan cells are eukaryotic. D. antiprotozoan drugs are not needed in the United States.
True or False: If B = the benefit of a behavior to a recipient, C = the cost of the behavior of the donor, and r = the degree of relatedness between the recipient and donor, then if rB > C, altruism can evolve
A. true B. false
Which of the following is NOT TRUE of the absorptive period?
A. Glucose absorption from the gut is high. B. Glucose utilization by cells is high. C. Fat utilization by cells is high. D. Synthesis of triglycerides is high. E. Breakdown of glycogen is low.
Which trait is least likelyto be shared between green algae and land plants?
a. presence of stomata b. chloroplasts with chlorophyll a c. cellulose in their cell walls d. store energy captured during photosynthesis as starch e. chloroplasts with chlorophyll b