Most of the primary plant body is made up of the _____ tissue system.

A. Vascular
B. Dermal
C. Root
D. Ground
E. Shoot


Ans: D. Ground

Biology & Microbiology

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DNA replication requires:

a. template DNA b. free nucleotides c. DNA polymerase d. all of these

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Transgenic Bt crops have been genetically modified to

A. resist common herbicides. B. have increased protein content. C. produce an insecticide. D. be tolerant of salt in the soil. E. grow faster.

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Most mutations are:

a) beneficial or neutral to the organism in which the mutation takes place. b) random with respect to the environmental needs of the organism in which the mutation takes place. c) accounted for by the Hardy-Weinberg equilibrium. d) found in the cytoplasm. e) found in regulator genes.

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When the hormone epinephrine binds to receptors on the surface of a heart muscle cell, a new molecule, called cyclic AMP, is produced. Cyclic AMP then causes the heart muscle cells to contract more strongly, increasing blood flow throughout the body

In this example, cyclic AMP is acting as a(n) A) second messenger. B) intercellular enzyme. C) hormone. D) energy carrier. E) target cell.

Biology & Microbiology