By using a ____ microscope, the Emmons procedure increases the precision of the refractive index measurements.

What will be an ideal response?


Phase-contrast

Biology & Microbiology

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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

Biology & Microbiology

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.

Biology & Microbiology

Which of the following are sensitive to streptomycin?

a. archaea b. fungi c. bacteria d. amoeba

Biology & Microbiology

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.

Biology & Microbiology