Which of the following choices correctly identifies a reactant in the following chemical equation?

CO2 + H2O ? H2CO3
a. carbonic acid
b. oxygen
c. water
d. sugar
e. carbon monoxide


C

Biology & Microbiology

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Which of the following methods is used to amplify RNA sequences?

A. PCR with RNA primers that anneal to repetitive DNA sequences B. reverse transcriptase-PCR using DNA primers C. quantitative PCR using RNA primers D. RNA polymerase I with DNA primers E. All of these choices are correct.

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Echinoderms and chordates are

a. deuterostomes. b. protostomes. c. animals whose blastopore becomes a mouth. d. both b and c.

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Cytokinesis usually occurs just prior to mitosis. Indicate whether the statement is true or false

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Mutations are regarded as a strong evolutionary mechanism for changing allelic frequencies

Indicate whether the statement is true or false

Biology & Microbiology