Bio-Chemistry (M.Phil./Ph.D.) 2019 Panjab University Entrance Exam With Answers

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9.

The biological role of restriction enzymes is:

A: Restrict the damage to DNA by ultraviolet light
B: Make bacteria resistant to antibiotics
C: Degrade foreign DNA that enters a bacterium
D: Restrict the size of DNA in certain bacterium

The answer is: C

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