Lipases break down
a. carbohydrates.
b. proteins.
c. nucleic acids.
d. lipids.
Ans: d. lipids.
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Radish flowers may be red, purple, or white. The part of the radish we eat may be oval or long. A cross between a red-flowered long radish plant and a white-flowered oval radish plant yields all-purple long radish offspring
Then the F1 are crossed. In the resulting F2 generation, which of the following phenotypic ratios would be expected? A) 9:3:3:1 B) 9:4:3 C) 1:1:1:1 D) 1:1:1:1:1:1 E) 6:3:3:2:1:1
All trypanosomes are ________
a. alveolates b. mixotrophs c. ciliates d. parasitic
Creosote bush clusters have been shown to be descendant from single seeds that germinated
a. in mesic environments. b. 9,000 to 11,000 years ago. c. from asexual reproduction. d. from a drought intolerant genotype. e. after being ingested by herbivores and deposited in feces.
Cell-mediated immunity is directed by:
a. B cells, which secrete antibodies. b. T cells, which secrete antibodies. c. macrophages, which produce histamines. d. B cells, which react with APCs. e. T cells, which react with APCs