Biology (Mader), 10th Edition

Chapter 13: Regulation of Gene Activity

Pre-Test

1
The _____ model proposed by Jacob and Monod explains gene regulation in prokaryotes.
A)endosymbiotic
B)cohesion-tension
C)operon
D)fluid mosaic
2
The short sequence of DNA where RNA polymerase first attaches when a gene is to be transcribed is called the _____.
A)promoter
B)operator
C)active site
D)replication fork
3
The lac operon _____.
A)is turned on in the presence of lactose
B)is an inducible operon
C)has three structural genes in it
D)All of the above
4
After DNA is transcribed and preliminary mRNA is formed, _____ control occurs in the nucleus.
A)transcriptional
B)posttranscriptional
C)translational
D)All of these
5
Changes that the polypeptide must experience before it is biologically functional are a part of _____ control of gene expression.
A)transcriptional
B)posttranscriptional
C)translational
D)posttranslational
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