When mRNA leaves the cell's nucleus, it next becomes associated with
A. proteins.
B. endoplasmic reticulum.
C. tRNA.
D. a ribosome.
Answer: D
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What is the function of protein kinase C (PKC) in gene regulation?
a. PKC triggers apoptosis in cells exhibiting malformed RNA molecules. b. PKC binds to NF-?B, inhibiting it from entering the nucleus for RNA transcription. c. PKC phosphorylates I?-B, preventing it from inhibiting RNA transcription. d. PKC is the transcription factor that initiates RNA transcription in the nucleus.
In salt marshes, predatory fish move in when
A) the tide is high. B) migratory fishes are spawning. C) the sun goes down. D) salinity is low.
A new antibiotic is able to bind the rho (?) factor associated with some transcription processes. As a result, this antibiotic would affect
A) initiation of transcription. B) elongation of transcription. C) binding of the RNA polymerase. D) termination of all transcription. E) termination of some transcription.
Trial-and-error learning where an animal learns to associate its behavioral response with a reward or punishment is known as
A. operant conditioning. B. nonassociative learning. C. habituation. D. classical conditioning.