Sulfonamides & trimethoprim act through which of the following mechanisms?
A. Inhibition of Protein Synthesis
B. Inhibition of nucleotide synthesis
C. Inhibition of DNA synthesis
D. Disruption of Cell Wall
E. Inhibition of mRNA synthesis
Ans: B. Inhibition of nucleotide synthesis
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When scientists transferred the gene for the AVP receptor from male voles into male mice, the male mice
a. began to eat roots, a preferred food of voles b. attempted to locate and mate with female voles c. preferred female mice they had already mated with to new females d. ceased normal social behaviors such as grooming and co-sleeping e. became aggressive and territorial
For an enzyme to function it requires
a. oxygen. b. a suitable substrate. c. a considerable amount of activation energy. d. ATP. e. all of these.
With deductive reasoning, you draw conclusions from specific observations
__________________ Indicate whether the statement is true or false.
Which of the following levels of organization is least complex?
a) organ b) tissues c) organ system d) cells