By using a ____ microscope, the Emmons procedure increases the precision of the refractive index measurements.
What will be an ideal response?
Phase-contrast
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Which term best describes the nitrogenous base adenine plus the sugar ribose?
A) adenine B) adenosine C) adenosine diphosphate D) adenosine triphosphate E) C followed by A or B
Which of the following explains why Mendel used the garden pea as his model system?
a. The plant rarely produces offspring that looks like the parent. b. The plant did not require Mendel to perform hybridizations. c. The plant had been used by Mendel in previous experiments. d. The plant has flowers that close securely during self-pollination.
Circular coral reefs that arise out of deep water with a centrally located lagoon are called:
a. atolls. b. barrier reefs. c. table reefs. d. fringing reefs.
Which of the following are sensitive to streptomycin?
a. archaea b. fungi c. bacteria d. amoeba