Chemistry NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 2 PCB Single Correct MCQ
Published on: August 14, 2026

Following enzymes/chemical/technique are used in the process of gel electrophoresis

(I) Sample DNA is cut into fragments

(II) Restriction endonucleases

(III) Agarose gel

(IV) Ethidium bromide

(V) UV-radiation

(VI) Elution

Mark the correct sequence of their use

A
II, I, III, VI, IV and V
B
I, II, III, IV, V, and VI
C
IV, V, VI, I, II and III
D
I, II, IV, V, VI and III

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Text Solution

Verified by Experts
The correct answer is:
B

In gel electrophoresis a molecule of DNA can be cut into fragments by the enzyme restriction endonuclease. DNA fragments move towards the anode according to their molecular size through the agarose gel The separated DNA fragments can be observed only after staining them with a solution of ethidium bromide. The bright orange coloured bands of DNA can be seen only under UV light. These bands of DNA fragments are cut out from the gel and extracted by using convenient technique. This step is called elution

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