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NEET Exam  >  NEET Test  >  Biology Class 12  >  Test: Replication (NCERT) - NEET MCQ

Replication (NCERT) - Free MCQ Practice Test with solutions, NEET Biology


MCQ Practice Test & Solutions: Test: Replication (NCERT) (5 Questions)

You can prepare effectively for NEET Biology Class 12 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Replication (NCERT)". These 5 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 5 minutes
  • - Number of Questions: 5

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Test: Replication (NCERT) - Question 1
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First experimental proof for semi-conservative DNA replication was shown in

Detailed Solution: Question 1

Mathew Meselson and Franklin Stahl (1958) conducted various experiments using isotopically labelled DNA of Escherichia coli to provide evidence in favour of semije mode of DNA replication. various experiments Escherichia coli to on conservative mode notes the renlisation of DNA replication.

Topic in NCERT: The experimental proof

Line in NCERT: "it is now proven that dna replicates semiconservatively. it was shown first in escherichia coli and subsequently in higher organisms, such as plants and human cells."

Test: Replication (NCERT) - Question 2
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DNA replication takes place at ________ phase of the cell cycle

Detailed Solution: Question 2

In eukaryotes, the replication of DNA takes place at S-phase of the cell cycle. The replication of DNA and cell division cycle should be coordinated. A failure in cell division after DNA replication results into chromosomal anomaly.

Topic in NCERT: Dna replication in eukaryotes

Line in NCERT: "in eukaryotes, the replication of dna takes place at s-phase of the cell-cycle."

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Test: Replication (NCERT) - Question 3
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Select the incorrect statement regarding DNA replication.

Detailed Solution: Question 3

Synthesis of DNA by DNA polymerases occurs only in 5'→3' direction. One strand called leading strand , is copied in the same direction as the unwinding helix. The other strand is known as lagging strand. Replication of lagging strand is in a dicontinuous way , and in the direction of growth of lagging stand is 3'→5' though in short segments of DNA which are always in the 5'→3' direction. These short segments are called Okazaki fragments joined together by the action od DNA ligase.

Topic in NCERT: Dna replication

Line in NCERT: "the dna-dependent dna polymerases catalyse polymerisation only in one direction, that is 5'→3'."

Test: Replication (NCERT) - Question 4
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Where does the replication process initiate in E. coli DNA?

Detailed Solution: Question 4

DNA polymerases are incapable of initiating replication by themselves. Furthermore, replication does not begin at arbitrary locations on the DNA. In E. coli, replication starts at a specific site on the DNA, known as the origin of replication.
Replication initiates at a definite region in E. coli DNA known as the origin of replication.

Topic in NCERT: Origin of replication

Line in NCERT: "there is a definite region in e. coli dna where the replication originates. such regions are termed as origin of replication."

Test: Replication (NCERT) - Question 5
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What enzyme joins the discontinuously synthesized fragments during DNA replication?

Detailed Solution: Question 5

DNA ligase is the enzyme that joins the discontinuously synthesized fragments (Okazaki fragments) on the lagging strand.

Topic in NCERT: Dna replication

Line in NCERT: "the discontinuously synthesised fragments are later joined by the enzyme dna ligase."

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About this NEET Practice Test

This test contains 5 MCQs on Replication (NCERT) with detailed solutions for each question. It is part of the Biology Class 12 course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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