Chapter 17 Study Questions--answers at end - CHAPTER 17 STUDY QUESTIONS 1 Gene expression can be controlled at multiple levels Which of the following

Chapter 17 Study Questions--answers at end - CHAPTER 17...

This preview shows page 1 - 2 out of 16 pages.

CHAPTER 17 STUDY QUESTIONS1)Gene expression can be controlled at multiple levels. Which of the following levels of control would allow the most rapid response to environmental change?A.transcriptional controlB.translational controlC.post-translational control2)E. coliand many other bacteria of the human gut need to have fine-tuned regulation of gene expression in order to: A.replicate their DNAB.metabolize nutrients of any sortC.effectively compete for space and nutrients.D.increase in sizeE.evolve over time3)Although the expression of most genes is tightly regulated, some genes are expressed at roughly constant rates (i.e., constitutively). Which of the following genes would you predict to be constitutively expressed?A.genes involved in the biosynthesis of tryptophan (an amino acid)B.genes involved in the degradation of tryptophanC.genes involved in the degradation of arabinose, a sugarD.genes that that code for ribosomal RNAsE.genes involved in the transport of maltose, a sugar, into the cell4)Which components of the lacoperon might you expect to see utilized in the regulation of other genes?5)Full induction of the lacoperon occurs when:6)Bacterial and eukaryotic cells primarily control of gene expression at the level of transcription. If instead cells exerted control of gene expression primarily at the post-translational level, what would be different? 7)An experimental technique that allows an investigator to screen for mutants that cannot utilize a particular nutrient is called: A.mutation inductionB.replica platingC.use of antibiotic-containing platesD.selection for regulatory mutantsE.DNA footprinting8)In the first step of their experiments, Jacob and Monod treated E. colicells with UV light or X-rays in order to: A.decrease the number of viable cellsB.induce DNA repair enzymesC.increase the frequency of mutations in all genesD.induce mutations only in regulatory genes and sequences of the lacoperonE.induce mutations only in genes (both regulatory and structural) of the lacoperon
Background image
Image of page 2

You've reached the end of your free preview.

Want to read all 16 pages?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes