There are how many different kinds of amino acids in proteins?
a. 3
b. 6
c. 12
d. 20
e. 28
D
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Enzyme 1 converts substrate A into product B. Is this an example of a metabolic pathway?
A. Yes. This is a metabolic pathway that includes feedback inhibition. B. No. This only describes one chemical reaction. A metabolic pathway includes multiple chemical reactions. C. Yes. This is a simple metabolic pathway. D. No. A metabolic pathway must include an inhibitory step.
Chemosynthetic bacteria are unique:
a. in not requiring CO2. b. because they use energy derived from chemicals. c. because they can produce food with low light. d. and are very common in the twilight depths. e. because many forms are also bioluminescent.
The most important pigment(s) for the process of photosynthesis is(are):
a. carotenoids. b. chlorophyll a. c. chlorophyll b. d. chlorophyll c. e. All of these are equally important for photosynthesis.
The process of chromosome segregation begins at which phase?
A. Anaphase I B. Telophase I C. Metaphase I D. Prophase I E. Meiosis II