Molecular lesions of DNA are called _____.
a) point mutations
b) broken side rails
c) cross-linking
d) rung breaks
Ans: a) point mutations
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Red blood cells are bi-concave. Their shape is determined by interior proteins anchored to the membrane termed
A. clathrins. B. phospholipids. C. cytoskeleton. D. spectrins. E. actin filaments.
In competitive inhibition, the ____
a. products block the active site of the enzyme b. products bind to a site other than the active site of the enzyme and block enzyme activity indirectly c. substrate and cofactors compete for the active site d. inhibitor binds to and directly blocks the active site of the enzyme e. inhibitor binds to the enzyme at a site other than its active site
All of the following are true of the process of
phosphorylation EXCEPT that a. a molecule gains a phosphate group. b. a molecule loses a phosphate group. c. molecules become less stable. d. it is used to prime molecules to react. e. it produces ADP from ATP.
A rock that is broken into smaller fragments as a result of freezing and thawing has experienced ________ weathering
Fill in the blank(s) with correct word