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Enzymes Questions Set 1

Test Your Knowledge and master Biochemistry

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Biochemistry (Enzymes Set 1)

1 / 25

A Holoenzyme is

2 / 25

A synthetic nucleotide analogue, used in organ transplantation as a suppressor of
immunologic rejection of grafts is

3 / 25

In reversible non-competitive enzyme
activity inhibition

4 / 25

From arachidonate, synthesis of prostaglandins is catalysed by

5 / 25

Neimann-Pick disease is due to the deficiency of the enzyme:

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A sigmoidal plot of substrate concentration ([S]) verses reaction velocity (V) may
indicate

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Fischer’s ‘lock and key’ model of the enzyme action implies that

8 / 25

An example of ligases is

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In reversible non-competitive enzyme
activity inhibition

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Non steroidal anti inflammatory drugs, such as aspirin act by inhibiting the
activity of the enzyme:

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An example of lyases is

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Activation or inactivation of certain key regulatory enzymes is accomplished by
covalent modification of the amino acid:

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The Km of the enzyme giving the kinetic
data as below is

14 / 25

From the L ineweaver-Burk p lot of Michaelis-Menten equation, Km and Vmax can be determined

when V is the reaction velocity at substrate concentration S,the X-axis experimental data are expressed as

15 / 25

A demonstrable inducer is absent in

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The enzyme which can add water to a carbon-carbon double bond or remove
water to create a double bond without breaking the bond is

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The compound which has the lowest density is

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Example of an extracellular enzyme is

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Krabbe’s disease is due to the deficiency
of the enzyme:

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Enzymes, which are produced in inactive
form in the living cells, are called

21 / 25

Gaucher’s disease is due to the deficiency
of the enzyme:

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Farber’s disease is due to the deficiency
of the enzyme:

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An inducer is absent in the type of enzyme:

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The kinetic effect of purely competitive
inhibitor of an enzyme

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Fabry’s disease is due to the deficiency of
the enzyme:

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