Which three of the following groups are most commonly used to covalently modify an enzyme and its activity? (Check all that apply.)
A. Methyl group
B. Hydroxyl group
C. Phosphoryl group
D. Adenyl group
Answer: D
Biology & Microbiology
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In a pond, tadpoles eat algae and fish eat the tadpoles. Above the pond, grasshoppers eat grass and, at night, are preyed upon by bats. Other bats eat the fish that eat the tadpoles. In this community, the algae are:
A. primary producers. B. primary consumers. C. secondary consumers. D. tertiary consumers. E. detritivores.
Biology & Microbiology
What key words does the question contain and what do they mean?
What will be an ideal response?
Biology & Microbiology
Vasodilation does what?
What will be an ideal response?
Biology & Microbiology
A _____ is typically expressed as a percentage, such that the rate base is 100.
a. ratio b. discrete c. proportion d. rate
Biology & Microbiology