In the unlikely event that a tRNA has been charged with the wrong amino acid, what high-fidelity enzyme is likely to blame?
A) peptidyl transferase
B) DNA polymerase I
C) DNA polymerase III
D) aminoacyl synthetase
E) aminoacyl peptidase
D
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Which function earlier in development: maternal-effect genes or zygotic genes?
What will be an ideal response?
K-Antigen
What will be an ideal response?
The plasma membrane Na+/K+-ATPase pump
A. is a symporter. B. is used to generate sodium and potassium gradients across the membrane. C. does not require ATP. D. is a pump for facilitated diffusion of K+ into the cell and Na+ out of the cell. E. is a pump for active transport of K+ out of the cell and Na+ into the cell.
More than half of our antibiotics are
A) produced by fungi. B) produced by bacteria. C) synthesized in laboratories. D) produced by Fleming. E) produced by eukaryotic organisms.