Nucleic acids are long chains of ____

a. amino acids
b. lipids
c. nucleotides
d. sugars
e. peptides


ANSWER: c

Biology & Microbiology

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If an Arabidopsis plant does not express homeotic genes during flower development

A. the plant will die. B. the plant will only develop to the heart stage. C. the plant will not develop cotyledons. D. the plant will develop leaves instead of flowers. E. the plant will develop flowers instead of leaves.

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12C, 13C, and 14C are all isotopes of carbon. They differ in their

a. overall charges. b. number of electrons. c. number of protons. d. number of neutrons. e. electron energy shells.

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Which method is utilized by eukaryotes to control their gene expression that is NOT used in bacteria?

A) control of chromatin remodeling B) control of RNA splicing C) transcriptional control D) control of both RNA splicing and chromatin remodeling

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Staphylococcal food poisoning is called an intoxication disorder because

A) toxic bacteria are ingested in the food. B) the bacteria produce type III secretion system toxins. C) affected people appear drunk. D) toxins produced by the bacteria growing in the food are ingested along with the food. E) the bacteria release toxins when they are digested.

Biology & Microbiology