Histone modifications that play a role in silencing expression of tumor suppressor genes are influenced directly by

A) microRNAs.
B) epidermal growth factor signaling.
C) p53 activity.
D) carcinogens.
E) APC activity.


Answer: A

Biology & Microbiology

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If the surface area of a cell increases by a factor of 100, the volume of that cell will

A) remain the same. B) increase by a factor of 100. C) increase by a factor of 1000. D) increase by a factor of 10. E) decrease by a factor of 100.

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Four of the five choices listed below are somatic

senses. Select the exception. a. light b. pressure c. touch d. temperature e. pain

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Argentine fire ants entered the United States in the

a. 1920s. b. 1930s. c. 1940s. d. 1950s. e. 1960s.

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Exploring in the tropics, you discover a nonvascular plant that produces pollen. What type of plant have you discovered?

A) an angiosperm B) a fern C) a bryophyte D) an entirely new type that you will get to name

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