Sail E0 Webinar

MCQs

Total Questions : 369 | Page 5 of 37 pages
Question 41. Which of the following reactions is required for proofreading during DNA replication by DNA polymerase III?
  1.    5’ to 3’ exonuclease activity
  2.    3’ to 5’ exonuclease activity
  3.    3’ to 5’ endonuclease activity
  4.    5’ to 3’ endonuclease activity
 Discuss Question
Answer: Option B. -> 3’ to 5’ exonuclease activity
Answer: (b).3’ to 5’ exonuclease activity
Question 42. DNA unwinding is done by
  1.    Ligase
  2.    Helicase
  3.    Topoisomerase
  4.    Hexonuclease
 Discuss Question
Answer: Option B. -> Helicase
Answer: (b).Helicase
Question 43. The enzyme used to join bits of DNA is
  1.    DNA polymerase
  2.    DNA ligase
  3.    Endonuclease
  4.    Primase
 Discuss Question
Answer: Option B. -> DNA ligase
Answer: (b).DNA ligase
Question 44. Which of the following enzymes is the principal replication enzyme in E. coli?
  1.    DNA polymerase I
  2.    DNA polymerase II
  3.    DNA polymerase III
  4.    None of these
 Discuss Question
Answer: Option C. -> DNA polymerase III
Answer: (c).DNA polymerase III
Question 45. Which of the following enzymes remove supercoiling in replicating DNA ahead of the replication fork?
  1.    DNA polymerases
  2.    Helicases
  3.    Primases
  4.    Topoisomerases
 Discuss Question
Answer: Option D. -> Topoisomerases
Answer: (d).Topoisomerases
Question 46. Enzymes, responsible for unraveling short segments of DNA is
  1.    DNA polymerase
  2.    helicase
  3.    DNA ligase
  4.    primase
 Discuss Question
Answer: Option B. -> helicase
Answer: (b).helicase
Question 47. The nucleosome consists of histone
  1.    octamer and 146 bp of DNA
  2.    tetramer and 146 bp of DNA
  3.    hexamer and 146 bp of DNA
  4.    none of the above
 Discuss Question
Answer: Option A. -> octamer and 146 bp of DNA
Answer: (a).octamer and 146 bp of DNA
Question 48. What bands will be observed in a cesium chloride gradient after two rounds of replication?
  1.    One light, one medium and one heavy band
  2.    One light and one medium band
  3.    One medium band
  4.    One medium and one heavy band
 Discuss Question
Answer: Option B. -> One light and one medium band
Answer: (b).One light and one medium band
Question 49. Enzyme, responsible for proofreading base pairing is
  1.    DNA polymerase
  2.    Telomerase
  3.    Primase
  4.    DNA ligase
 Discuss Question
Answer: Option A. -> DNA polymerase
Answer: (a).DNA polymerase
Question 50. Which of the following would not contain DNA?
  1.    Yeast
  2.    Bacteria
  3.    Glass crystals
  4.    Mold
 Discuss Question
Answer: Option C. -> Glass crystals
Answer: (c).Glass crystals

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0