Mcqs

Molecular Biology Mcqs

Our 1000+ Molecular Biology MCQs (Multiple Choice Questions and Answers) focus on all areas of Molecular Biology covering 100+ topics. These topics are chosen from a collection of the most authoritative and best reference books on Molecular Biology. One should spend 1 hour daily practicing these MCQs for 2-3 months to learn and assimilate the Molecular Biology subject comprehensively. This way of systematic learning will prepare anyone easily for Molecular Biology exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

 

Molecular Biology Multiple Choice Questions Highlights

  • 1000+ Multiple Choice Questions & Answers (MCQs) in Molecular Biology with a detailed explanation of every question.
  • These MCQs cover theoretical concepts, true-false(T/F) statements, fill-in-the-blanks, and match the following style statements.
  • These MCQs also cover numerical as well as diagram-oriented MCQs.
  • These MCQs are organized chapterwise and each Chapter is further organized topicwise.
  • Every MCQ set focuses on a specific topic of a given Chapter in the Molecular Biology Subject.

 

Who should Practice Molecular Biology MCQs?

  • Students who are preparing for college tests and exams such as mid-term tests and semester tests on Molecular Biology.
  • Students who are preparing for Online/Offline Tests/Contests in Molecular Biology.
  • Students who wish to sharpen their knowledge of the Molecular Biology Subject.
  • Anyone preparing for Aptitude test in Molecular Biology.
  • Anyone preparing for interviews (campus/off-campus interviews, walk-in interviews and company interviews).
  • Anyone preparing for entrance examinations and other competitive examinations.
  • All - Experienced, Freshers and College / School Students.

 

Molecular Biology Chapters

Here's the list of chapters on the "Molecular Biology" subject covering 100+ topics.

  • DNA, RNA, and Protein
  • Genomes and DNA
  • Manipulation of Nucleic Acids & Polymerase Chain Reaction
  • DNA Sequencing
  • DNA Replication
  • Transcriptions of Genes
  • Expression of Genetic Information
  • Processing of RNA
  • Protein Synthesis
  • Regulation of Transcription in Prokaryotes
  • Mobile DNA
  • Plasmids
  • Manipulation of Genetic Material
  • Mutations and Repair
  • Recombination

 

Latest Popular
Q:

What is the source of energy during the action of SPO11?

A) Cleavage of peptide bond B) Cleavage of amide bond
C) Cleavage of glycoside bond D) Cleavage of phosphodiester bond
 
Answer & Explanation Answer: D) Cleavage of phosphodiester bond

Explanation: During the action of SPO11 the cleavage of DNA phosphodiester bond is stored in the bound protein-DNA linkage. By this process, the DNA strands can be released.

View Answer Discuss

Category: Biotech Engineering MCQs
Sub Category: Molecular Biology Mcqs

27
Q:

What is the cleavage site of RuvC?

A) 5’….A/TTTG/C….3’ B) 5’….G/TTTC/T….3’
C) 5’….T/TGCG/C….3’ D) 5’….C/ATTG/T….3’
 
Answer & Explanation Answer: A) 5’….A/TTTG/C….3’

Explanation: Cleavage by RuvC takes place at sites conforming to the consensus sequence 5’….A/TTTG/C….3’. cleavage occurs after the second T in this sequence.

View Answer Discuss

Category: Biotech Engineering MCQs
Sub Category: Molecular Biology Mcqs

35
Q:

After cleaved by RuvC the resulting ligated recombination products will only be the splice product.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: Depending on which pair of strands is cleaved by RuvC the resulting recombinant product will depend. It either forms a spliced product or a patched product.

View Answer Discuss

Category: Biotech Engineering MCQs
Sub Category: Molecular Biology Mcqs

31
Q:

Which component cleaves the specific DNA strands at the Holliday junction?

A) RuvC B) RuvD
C) RuvA D) RuvB
 
Answer & Explanation Answer: A) RuvC

Explanation: RuvC recognizes the Holliday junction. It specifically nicks two of the homologous DNA strands that have the same polarity.

View Answer Discuss

Category: Biotech Engineering MCQs
Sub Category: Molecular Biology Mcqs

55
Q:

The RuvAB complex specifically recognizes the Holliday junction in an ATP dependent manner.

A) True B) False
 
Answer & Explanation Answer: A) True

Explanation: RuvA recognizes and binds to the Holliday junction and recruits RuvB protein to this site. RuvB is a hexameric ATPase thus making the process an ATP dependent one.

View Answer Discuss

Category: Biotech Engineering MCQs
Sub Category: Molecular Biology Mcqs

37
Q:

What is the joint molecule?

A) RecB of the RecBCD pathway B) B DNA
C) Z DNA D) Rec A bound three stranded structure
 
Answer & Explanation Answer: D) Rec A bound three stranded structure

Explanation: The RecA bound three stranded structure is known as the joint molecule. It usually contains several hundred base pairs of hybrid DNA.

View Answer Discuss

Category: Biotech Engineering MCQs
Sub Category: Molecular Biology Mcqs

33
Q:

What is the central protein of homologous recombination?

A) RecB B) RecD
C) RecA D) RecC
 
Answer & Explanation Answer: C) RecA

Explanation: RecA is the central protein of homologous recombination. It is the founding member of a family of enzymes called the strand exchange protein.

View Answer Discuss

Category: Biotech Engineering MCQs
Sub Category: Molecular Biology Mcqs

30
Q:

If the foreign DNA lacks the Chi site what will happen?

A) Chi site of DNA will destroy B) Foreign DNA is not affected
C) Foreign DNA easily enters the cell D) DNA sequence will be intact as previous
 
Answer & Explanation Answer: C) Foreign DNA easily enters the cell

Explanation: RecBCD sometimes function simply to destroy DNA as it does when foreign DNA lacking frequent Chi sites enters cells. RecBCD can protect cells from the potentially deleterious consequences of taking up foreign sequences.

View Answer Discuss

Category: Biotech Engineering MCQs
Sub Category: Molecular Biology Mcqs

33