Control of Gene Expression

What is the function of a spliceosome? A. protein activation B. translation C. protein degradation D. regulating the transport of mRNA to the cytoplasm E. RNA processing

E

Protein-phosphorylating enzymes' role in the regulation of gene expression involves _____. A. protein activation B. translation C. protein degradation D. regulating the transport of mRNA to the cytoplasm E. RNA processing

A

Regulatory proteins bind to _____. A. the operator B. the lactose-utilization genes C. the regulatory gene D. RNA polymerase E. transcription factors

A

Which of the following terms describes the DNA-protein complexes that look like beads on a string? A. Nucleosome B. Histones C. Chromatin D. 30-nanometer fiber

A

In the presence of a regulatory protein the lac operon is _____. A. transcribed B. not transcribed C. transcribed at a faster than usual rate D. is turned on E. either transcribed or not transcribed

B

Which of the following events in transcription initiation likely occurs last? A. Regulatory transcription factors bind to enhancers. B. RNA polymerase binds to the promoter of the gene. C. TBP is recruited to the promoter. D. Basal transcription factors form a basal transcription complex.

B

Which of the following regulatory DNA sequences might be located thousands of nucleotides away from the transcription start site of a gene? A. Promoter B. TATA box C. Enhancer D. Promoter-proximal element

C

Which of these is NOT a component of the lac operon? A. lactose-utilization genes only B. promoter only C. regulatory gene only D. operator only E. promoter and operator

C

Enzyme complexes that break down protein are called _____. A. lipases B. ubiquitins C. amylase D. proteasomes E. nucleases

D

The nuclear membrane's role in the regulation of gene expression involves _____. A. protein activation B. translation C. protein degradation D. regulating the transport of mRNA to the cytoplasm E. RNA processing

D

The operon model of the regulation of gene expression in bacteria was proposed by _____. A. Watson and Crick B. Franklin C. Darwin D. Jacob and Monod E. Mendel

D

Which of the following regulatory elements is not composed of DNA sequences? A. Silencers B. Promoter-proximal elements C. Enhancers D. Activators

D

_____ bind(s) to DNA enhancer regions. A. RNA polymerase B. Promoters C. Introns D. Activators E. Exons

D

True or false? One possible way to alter chromatin structure such that genes could be transcribed would be to make histone proteins more positively charged.

False

True or false? Regulatory and basal transcription factors regulate transcription by binding to the promoter.

False