What initiates the molting process?

a. Chronological stages of the life cycle

b. Changes in the environment.
c. The general need to grow.
d. Pheromones.


b

Biology & Microbiology

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A part of a chromosome that attaches sister chromatids to each other is the

A. chromatin. B. histone. C. nucleosome. D. centromere. E. ribosome.

Biology & Microbiology

2,4-D, a potent eudicot weed killer, is most likely a synthetic ____

a. auxin b. gibberellin c. cytokinin d. phytochrome e. brassinosteroid

Biology & Microbiology

The nucleic acid of retroviral provirus is composed of RNA

Indicate whether the statement is true or false

Biology & Microbiology

The ________ of atoms determine how atoms will react with each other.

A. protons B. electrons C. nuclei D. neutrons

Biology & Microbiology