Which statement best describes the relationship between methylation and gene activity?
a. DNA methylation is generally associated with transcriptional inactivity.
b. DNA methylation is generally associated with translational inactivity.
c. DNA methylation is generally associated with transcriptional activity.
d. Histone methylation is generally associated with transcriptional inactivity.
e. Histone methylation is generally associated with transcriptional activity.
Ans: a
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A. The G protein pathway that alters the conformation of the sodium channels is defective. B. Chemoreceptors specific for PTC are not expressed. C. Too few sodium channels are present in the taste receptors. D. Neurotransmitter release from these taste receptors is impaired.
One way in which monocots and eudicots differ is in ____
a. having the capacity to bear seeds b. their types of tissues c. their organ systems d. their pattern of tissue organization e. having vascular bundles
Which of the following is (are) characteristic of
arteries? a. rapid transport vessels b. large diameter c. pressure reservoirs d. low resistance vessels e. all of these
Which of the following begins with signals from pain receptors in skin, skeletal muscles, joints, and tendons?
A. Chronic pain B. Neuropathic pain C. Nociceptive pain D. Visceral pain E. Somatic pain