Removing a nucleosome from DNA to expose a promoter is an example of ____
a. induction
b. dedifferentiation
c. post-transcriptional regulation
d. gene silencing
e. chromatin remodeling
ANSWER: e
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What distinguishes expression vectors from other cloning vectors?
a. Expression vectors do not have an origin of replication. b. Only expression vectors have origins of replication. c. Expression vectors contain regulatory sequences to allow transcription and translation of an inserted gene. d. Inserted genes cannot be transcribed from an expression vector. e. Expression vectors do not contain antibiotic resistance genes.
Polar molecules
A. have an unequal charge distribution. B. always involve oxygen. C. are insoluble in water. D. have an equal charge distribution. E. always contain carbon.
Blood moves through the structure indicated by
a. A. b. B. c. C. d. D. e. E.
ADF/cofilin plays a role in
a. the disassembly of microfilaments. b. stimulation of actin filament formation. c. the nucleation of microfilaments. d. the disassembly of microtubules.