Commercial micropropagation methods result in cloning of plants.

a. true
b. false


Answer: a. true

Biology & Microbiology

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A tracheid is

A. a gametophyte cell. B. a small branch of an insect trachea. C. a seed-bearing stem. D. a specialized vascular cell. E. a reproductive chamber.

Biology & Microbiology

What happens to the enzyme when it is used in a reaction? a. The enzyme increases in size

b. The enzyme breaks down and becomes unusable. c. The enzyme is folded in half. d. The enzyme decreases in size. e. Nothing happens to the enzyme.

Biology & Microbiology

What was the likely fate of the first life on

earth?

a. destroyed by a meteorite b. outcompeted by multi-celled organisms c. consumed by dinosaurs d. poisoned by oxygen gas e. starvation

Biology & Microbiology

Nutrients and antibodies move across the placenta from mother to embryo or fetus, as do __________,

which can cause birth defects. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology