Gene Repression in Bacteria MCQs Quiz Online PDF Download

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MCAT practice test MCQ on genes linked on e coli chromosome are with options lacz, lacy, laca and all of above problem solving skills for viva, competitive exam prep, interview questions with answer key. Free study guide is for online learning gene repression in bacteria quiz with MCQs to practice test questions with answers.

MCQs on Gene Repression in Bacteria Quiz PDF Download

MCQ. Genes linked on E coli chromosome are

  1. lacZ
  2. lacY
  3. lacA
  4. all of above

D

MCQ. LacA encodes a detoxifying enzyme called

  1. β-galactoside transacetylase
  2. helicase
  3. polymerase
  4. gyrase

A

MCQ. Inhibition of gene expression by changing regulatory protein activity is termed as

  1. gene expression
  2. gene repression
  3. gene mutation
  4. gene localization

B

MCQ. In E.coli metabolism of lactose requires at least

  1. 2 proteins
  2. 3 proteins
  3. 4 proteins
  4. 5 proteins

A

MCQ. Lac operon expresses genes whose products catabolize

  1. maltose
  2. phosphate
  3. sucrose
  4. lactose

D