Which of the following statements about coral bleaching is true?
A. All of the answer options are true.
B. Bleached corals die more rapidly than
unbleached corals.
C. Coral bleaching results from the loss of
algal symbionts from the coral tissue.
D. Corals appear white after bleaching
because their white calcium carbonate
skeletons are visible through their translucent
tissue.
E. Increased seawater temperature is one
cause of coral bleaching.
A
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Which one of the following is not a component of a phospholipid?
A. a three-carbon backbone such as glycerol B. a phosphate group C. two fatty acid tails D. a core of four fused carbon rings E. three-carbon backbone such as glycerol, a phosphate group, two fatty acid tails and a core of four fused carbon rings are all components of phospholipids.
Where would you expect to find the receptor for a nonpolar ligand?
A. on the cell surface B. in the nucleus of the cell C. in the cytosol D. either in the nucleus of the cell or in the cytosol
Without the work of Rosalind Franklin, Watson and Crick would not have known
A. which nucleotides could pair together. B. how many strands of DNA made up the molecule. C. the shape of the molecule. D. the width of the molecule. E. All of the above
Coevolution is
a. where each species is a selective agent that shifts the range of variation in the other. b. random association between two individuals that allows similarity patterns to emerge. c. resource partitioning between two related species. d. mutualistic associations and commensalism. e. none of these