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
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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.
Four of the five choices listed below are somatic
senses. Select the exception. a. light b. pressure c. touch d. temperature e. pain
Argentine fire ants entered the United States in the
a. 1920s. b. 1930s. c. 1940s. d. 1950s. e. 1960s.
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