In the experimental evaluation of a new drug, what is the purpose of a placebo?
a. A placebo increases the sample size.
b. A placebo prevents errors in recording of the data.
c. A placebo removes the bias of the physician in charge of the experiment.
d. A placebo removes the potential psychological bias of the patient in the study.
e. A placebo prevents sampling errors from compromising the results of the experiment
d
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Which one of the following eukaryotic translational proteins is not a GTP-binding protein?
A. eIF2 B. eIF5B C. eIF3 D. eEF2
What is convergent evolution and what causes it?
What will be an ideal response?
Bacteria are most essential in the cycling of:
a. carbon. b. water. c. phosphorus. d. nitrogen. e. energy.
Ribosomes that are free in the cytosol and those that are bound to the ER membrane have
a. different types of large and small subunits. b. the same types of large and small subunits. c. different types of large subunits but the same small subunits. d. different types of small subunits but the same large subunits.