Gene Expression And Regulation Test

Gene Expression And Regulation

This is online test 01 for CBSE class 12 Biology Molecular Basis of Inheritance (Gene expression and regulation).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Operon concept was given by
  • A
    Jacob and Sharp
  • B
    Roberts and Sharp
  • C
    Francois Jacob and Jacques Monod
    Correct
  • D
    Griffith and Monod
2
What is called Griffith effect?
  • A
    RNA translation
  • B
    DNA transcription
  • C
    Bacterial transformation
    Correct
  • D
    Bacterial transduction
3
Enzymes called ______ add complementary nucleotides, floating inside the nucleus.
  • A
    None of these
  • B
    Lipoprotein lipase
  • C
    DNA polymerase
    Correct
  • D
    DNA synthetase
4
Repressor proteins are coded for by ______ genes
  • A
    Regulator
    Correct
  • B
    Operator
  • C
    Structural
  • D
    Promoter
5
RNA molecules that act as enzymes are called
  • A
    Transcriptase
  • B
    Polymerase
  • C
    Ribozymes
    Correct
  • D
    Both of the above
6
RNA polymerase is only capable of catalyzing the process of
  • A
    All of the above
  • B
    Elongation
    Correct
  • C
    Initiation
  • D
    Termination
7
Which one represents the correct manner of DNA replication?
  • A
    Option A
  • B
    Option B
  • C
    Option C
    Correct
  • D
    Option D
8
DNA sequence that code for protein are known as
  • A
    Control regions
  • B
    Intervening sequences
  • C
    Exons
    Correct
  • D
    Introns
9
Signaling between cells usually results in the activation of protein
  • A
    Kinases
    Correct
  • B
    Nucleases
  • C
    Lipases
  • D
    Proteases
10
A gene of operon which synthesizes a repressor protein is
  • A
    Regulator gene
    Correct
  • B
    Promoter gene
  • C
    Operator gene
  • D
    Structural gene