The many different breeds of domestic dog were produced by

A) natural selection. B) artificial mutation. C) physical selection. D) artificial selection.


D

Biology & Microbiology

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In order to examine mRNA transcripts isolated from cells, one needs to convert an RNA template to DNA. Doing this conversion requires which of the following enzymes?

A) reverse transcriptase B) reverse convertase C) DNA transcriptase D) DNA polymerase E) RNA polymerase

Biology & Microbiology

The disruption of a protein's three-dimensional structure is called

a. condensation. b. hydrolysis. c. ionization. d. oxidation. e. denaturation.

Biology & Microbiology

Echinoderms are characterized by bilateral symmetry in adults, a water vascular system, tube feet, and spiny skin.

a. true b. false

Biology & Microbiology

A cell that uses an organic carbon source and obtains energy from light would be called a

A) photoheterotroph. B) lithoautotroph. C) photoautotroph. D) chemoheterotroph. E) chemoautotroph.

Biology & Microbiology