Represser Lac-Operon protein attached to:
  • Operator
  • Inducer
  • Regulator
  • β-Glacto sidase
Following is important in Ïranscription:
  • DNA Methylase
  • CAAT Box
  • Promotar
  • DNA Polymerase
Anticodon found in:
  • On DNA
  • On t-RNA
  • On r-RNA
  • On m-RNA
In DNA helix:
  • Quadrate structure
  • Polarity
  • Antiparallel Polarity
  • Disuiphide bond
During splicing axon attached and inducer enzyme for reaction:
  • RNA Ligase
  • RNA Catalase
  • RNA permease
  • RNA poloymerase
During DNA synthesis formed segment is:
  • Polymerase fragment
  • RNA fragment
  • Okazaki fragment
  • RNA Primer
In a give DNA segment ATC ACC AGG ACC CCA ACA, the first base gets mutated. The effect of this on coding by the DNA segment will result in :
  • One amino acid less in protein
  • No change in the sequence
  • Complete change in the type and sequence of amino acid
  • Change in first amino acid only
DNA fragments are joined in a correct sequence by :
  • DNA ligase
  • RNA polymerase
  • Helicase
  • DNA polymerase
The ratio constant for a species is :
  • T+C/G + A
  • A+C/T + G
  • G + G/A + T
  • A + C/C + T
DNA repairing is done by:
  • By DNA polymerase I
  • By DNA Polymerase II
  • Both (a) and (b)
  • By Ligase
A ribotide is made up of:
  • Ribose + Phosphate + Uracil
  • Deoxribose + Uracil + Phosphate
  • Thymine + Ribose + Phosphate
  • Deoxyribpse + Phosphate + Adenine
the enzyme involved in transcription is:
  • DNA Polymerase I
  • DNA Polymerase II
  • RNA Polymerase
  • DNA Polymerase
Antiparallel strands of a DNA molecule means that:
  • One strand turns clockwise
  • One strand turns anticlockwise
  • The phosphate groups at the start of two DNA strands are in opposite position
  • The phosphate groups at the start of two DNA strands, at their ends, share the same position
Which one is mainly transcribed:
  • Only RNA sequence
  • Middle repetitive DNA sequence
  • Highly repetitive DNA sequence
  • Single copy of DNA sequence
Amino acid sequence, in protein synthesis is decided by the sequence of?
  • c-DNA
  • r-RNA
  • f-RNA
  • m-RNA
DNA multiplication is also called:
  • Replication
  • Transduction
  • Translation
  • Transcription
During Protein synthesis, atone point the process comes to a halt. Select the group of the three codons from the following, from which any one of the three could bring about this halt:
  • UUC, UUA, UAC
  • UAG, UGA, UAA
  • UUE, UCA, UCG
  • UUU, UCC, UAU
One turn of the helix in p-from DNA is approximately:
  • 20 Å
  • 2 nm
  • 20 nm
  • 34 nm
Which is not component of lac operon:
  • Primer gene
  • Promoter gene
  • constructive gene
  • Regulator gene
Okazaki fregments is:
  • RNA primer
  • small segments of DNA on leading stand
  • Small segments of DNA on lagging stand
  • None of these
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0