Which of the following atoms cannot participate in biological hydrogen bonds?

A. nitrogen
B. oxygen
C. carbon
D. both nitrogen and oxygen
E. both oxygen and carbon


C

Biology & Microbiology

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What is the name of any organism that floats or drifts in ocean currents?

a. Plankton b. Plankters c. Drifton d. Nekton

Biology & Microbiology

What makes water a solvent?

a. Fats dissolve in it. b. Ions and polar molecules dissolve in it. c. It mixes well with alcohol. d. It evaporates easily. e. It contains no minerals.

Biology & Microbiology

A scientific explanation that is conditional and requires more investigation is called a(n)

A) theory. B) hypothesis. C) control. D) fact. E) observation.

Biology & Microbiology

A person who has a constant need to eat may show impaired secretion of or response to

A. leptin. B. glucagon. C. thyroid hormone. D. thyroid-stimulating hormone. E. growth hormone.

Biology & Microbiology