The charge on amino acids in the active site of an enzyme would be affected by ___.

A. temperature
B. substrate concentration
C. pH
D. antibiotics


C. pH

Biology & Microbiology

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Scientists are attempting to genetically modify rice so that it will not incorporate ____ into the grains

a. arsenic b. methylmercury c. chelated iron d. lead e. uranium hexafluoride

Biology & Microbiology

To which of the following is a megaspore most closely and completely related?

a. female gametophyte b. seed c. ovule d. egg e. endosperm

Biology & Microbiology

The muscular tube leading from the pharynx to the stomach is the

A. larynx. B. trachea. C. esophagus. D. glottis. E. bronchus.

Biology & Microbiology

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

Biology & Microbiology