DNA ligase closes nicks between ____ by forming ____ bonds
a. nitrogenous bases; hydrogen
b. RNA fragments; noncovalent
c. DNA and RNA fragments; covalent
d. DNA fragments; peptide
e. DNA fragments; covalent
ANSWER: e
Biology & Microbiology
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The portion of the bone labeled I in the accompanying figure is called the:a
periosteum. b. lacunae. c. epiphysis. d. osteon. e. metaphysis
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Which phrase best describes "honeydew"?
a. phloem sap leaving the anus of an aphid b. phloem sap harvested as syrup c. xylem sap separated from syrup d. xylem sap forced out of the margins of leaves
Biology & Microbiology
The movement of substances to regions of lower concentration is called
A. pinocytosis. B. exocytosis. C. diffusion. D. active transport. E. pumping.
Biology & Microbiology