A promoter is a regulatory region located at the ____

a. beginning of a gene
b. end of a gene
c. beginning of a chromosome
d. centromere of a chromosome
e. end of a chromosome


a

Biology & Microbiology

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When leaves are actively transpiring at a high rate:

A. the risk of vessel collapse is reduced because the leaves exert a great deal of tensile force. B. the chance that an air bubble will form is decreased. C. the force created pulls vessel walls inward. D. air will only leak into a vessel if that vessel is broken or damaged. E. the chance of vessel collapse is reduced due to the high volume of water transport.

Biology & Microbiology

The part of the brain that includes the thalamus, hypothalamus, and pineal gland is the

a. pons. b. medulla oblongata. c. dorpora quadrigemina. d. diencephalon. e. telencephalon.

Biology & Microbiology

Polypeptides are composed of many 

A. amino acids. B. carbohydrates. C. nucleic acids. D. fatty acids.

Biology & Microbiology

In oxidation-reduction reactions, ____.

A. both molecules give up electrons B. both molecules gain electrons C. cells harvest energy D. the molecule that accepts electrons is reduced E. hydrogen ions are usually absorbed

Biology & Microbiology