Which of the following LEAST belongs with the others?
A. thymine dimer
B. UvrA protein
C. direct repair
D. nucleotide excision repair
E. UvrC protein
C. direct repair
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Which of the following is NOT part of the general response of cells during cellular communication?
A. The cell automatically returns to its normal activities after the signal has exerted its effect. B. A receptor on the outside of the cell binds to a specific signal molecule that it is designed to capture. C. A cell-surface receptor molecule becomes activated by binding to its molecular signal. D. An activated cell-surface receptor transfers the signal to the interior of the cell. E. The signal is carried and amplified inside the cell by binding to a series of specific proteins, affecting cellular activities according to the type of signal involved.
Ammonium chloride is a commonly used salt in minimal media. The reason ammonium chloride is
used is because:
a. it is an organic source of carbon. b. it provides nitrogen. c. it jellifies the media. d. it liquefies the media. e. it sterilizes the media.
The buildup of a toxin in an organism’s body is called biological magnification
____________________ Indicate whether the statement is true or false.
Cell membrane
What will be an ideal response?