Several amphibian species survive the winter using antifreeze chemicals by the process of
A) supercooling.
B) countercurrent heat exchange.
C) torpor.
D) rete.
A
Biology & Microbiology
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How does an "activated" receptor transfer information into the cell?
A. by altering its ligand-binding site B. through a conformational change C. by decreased phosphorylation D. by increased translation
Biology & Microbiology
The most likely identification of an anaerobic gram-positive bacillus that produces spores is:
a. Bifidobacterium. b. Eubacterium. c. Eggerthella. d. Clostridium.
Biology & Microbiology
Which of the following is a bone of the lower
leg in humans?
a. femur b. fibula c. radius d. ulna e. humerus
Biology & Microbiology
A couple has two female children. What is the probability that their next child will be male?
A) 25% B) 50% C) 33% D) 67%
Biology & Microbiology