Histone acetyl transferases exert their effect on gene activity by _____
A) neutralizing positive charges on the lysines of histones
B) introducing negative charges on the glutamic acids of histones
C) modifying the DNA sequence of the promoter
D) increasing the affinity of transcriptional activators for DNA
E) increasing the affinity of transcriptional inhibitors for DNA
Answer: A
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The malleus, incus, and stapes are all part of the:
A. inner ear. B. middle ear. C. outer ear. D. cochlea.
The region of South China emerged as China's core manufacturing region due to all of the following except
A) its harbors and ports. B) the established trade and manufacturing networks of Macau and Hong Kong. C) capital investment from Hong Kong, Taiwan and the Chinese Diaspora. D) its rich energy and natural resources base. E) its harbor and ports and its rich energy and natural resources base.
Four of the five answers listed below are processes associated with light-dependent reactions. Select the exception
a. photolysis b. electron transport phosphorylation c. carbon fixation d. photosystem I and II e. noncyclic pathways of ATP formation
Prolactin
a. stimulates the mammary glands to produce milk. b. is the only hormone to affect mammary glands. c. causes the development of breasts and other secondary sexual characteristics in the male. d. acts in concert with FSH to produce milk. e. has secondary effects on reducing the size of the uterus after birth.