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Isomerases

Differentiate...

Question

Differentiate between.
Lyases and ligases

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Solution

Lyases catalyse the removal of groups from their substrate by mechanisms other than hydrolysis, leaving double bond. Whereas, ligases catalyse the linking together of compounds utilizing the energy from ATP

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Q. Differentiate between.
Hydrolases and lyases

Q. Match and find the correct option.

$(a)$	Oxidoreductases	$(i)$	Linking of the compounds
$(b)$	Isomerases	$(i i)$	Removal of group from substrate
$(c)$	Ligases	$(i i i)$	Interconversion of isomers
$(d)$	Lyases	$(i v)$	Dehydrogenases
		$(v)$	Hydrolysis

Q. Match the terms to these definitions
Cofactor, coenzyme, holoenzyme, apoenzyme, ligases, lyases, transferases, isozymes, zymogens, competitive inhibitor, non-competitive inhibitor, activation energy
..........enzymes which catalyse the linking together of compounds utilising the energy from ATP

Q. Match the following list and choose the correct combination.

List-A	List-B
(A) Oxidoreductases	(i) Linking of two compounds
(B) Isomerase	(ii) Removal of groups from substrates
(C) Ligases	(iii) Inter conversion of isomers
(D) Lyases	(iv) Dehydrogenation
	(v) Hydrolysis

Q. Match the terms in column I with suitable term in column II.

Column I	Column II
(A) Oxidoreductases	(p) join molecules
(B) Transferases	(q) transfer of electrons
(C) Hydrolases	(r) transfer of group within molecules
(D) Lyases	(s) group-transfer reaction
(E) Isomerases	(t)addition of groups
(F) Ligases	(u) split molecules

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