The nontranscribed region of DNA to which RNA polymerase binds to initiate transcription is called the ________.
A. intron
B. operon
C. operator
D. exon
E. promoter
Answer: E
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Which enzyme is a topoisomerase?
A. DNA polymerase I B. DNA polymerase III C. DNA gyrase D. DNA ligase
Disadvantageous recessive alleles are protected from natural selection due to ____
a. homozygosity b. diploidy c. genetic drift d. haploidy
e. adaptationPeripheral proteins are linked to either surface of the plasma membrane by:
a. covalent disulfide bonds. b. associating with fatty acids through hydrophobic interactions. c. associating with glycoproteins on the inner membrane surface. d. bonding to integral proteins through noncovalent interactions. e. embedding in one side of the membrane and, thus, not extending through to the other side.
What are the three stages of translation and what occurs at each stage?
What will be an ideal response?