(A) The term "Molecular Scissors" refers to restriction enzymes.These enzymes are used in biotechnology to cut $DNA$ molecules at specific recognition

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(A) The term "Molecular Scissors" refers to restriction enzymes.These enzymes are used in biotechnology to cut $DNA$ molecules at specific recognition sequences.They act like biological scissors by cleaving the phosphodiester bonds within the $DNA$ backbone.

Class 12 Biology Biotechnology Principals and Process Tools of recombinant DNA technology

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The term "Molecular Scissors" refers to

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A
restriction enzyme
B
polymerase-$I$
C
taq polymerase
D
polymerase-$II$

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Biotechnology Principals and Process

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Tools of recombinant DNA technology

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Explain the following terms in the context of Biotechnology:
$(a)$ $PCR$
$(b)$ Restriction enzymes and $DNA$
$(c)$ Chitinase

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Match the columns:

Column-$I$ Column-$II$

$(a)$ Ligase $(i)$ It removes nucleotides from $DNA$ ends.

$(b)$ Endonuclease $(ii)$ Connects parts of $DNA$.

$(c)$ Exonuclease $(iii)$ Removes phosphates from $DNA$.

$(d)$ $DNA$ Polymerase $(iv)$ It produces sticky ends in $DNA$.

$(v)$ Useful for repeated amplification.

Column-$I$	Column-$II$
$(a)$ Ligase	$(i)$ It removes nucleotides from $DNA$ ends.
$(b)$ Endonuclease	$(ii)$ Connects parts of $DNA$.
$(c)$ Exonuclease	$(iii)$ Removes phosphates from $DNA$.
$(d)$ $DNA$ Polymerase	$(iv)$ It produces sticky ends in $DNA$.
	$(v)$ Useful for repeated amplification.