A reaction that releases energy is ________.
A. endergonic
B. impossible
C. None of the choices are correct.
D. exergonic
Answer: D
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Which type of interaction stabilizes the ?-helix and the ?-pleated sheet structures of proteins?
A) hydrophobic interactions B) disulfide bonds C) ionic bonds D) hydrogen bonds E) peptide bonds
In the Gulf of Mexico, red tides caused by the dinoflagellate Karenia brevis cause massive fish kills as well as respiratory problems in humans. As an environmental scientist, what would you suggest concerned citizens do to help prevent these red tides?
A. Purchase fuel-efficient vehicles B. Decrease the amount of artificial light in coastal areas C. Encourage sustainable fishing D. Reduce fertilizer use on lawns and gardens E. Participate in beach cleanup efforts
We are concerned about global warming because we anticipate that global temperatures will become higher than any that have ever occurred on earth.
a. true b. false
The region of the cell bounded by the plasma membrane is the ________.
Fill in the blank(s) with the appropriate word(s).