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Enzymes: types, properties, action, classification

14 solved questions

Every question from past board papers on Enzymes: types, properties, action, classification, newest paper first. Open any question for its full worked answer.

NEET UG 2025 question paper (official, booklet 45)

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  1. Name the class of enzyme that usually catalyze the following reaction :

    S – G + S# → S + S# – G

    Where, G → a group other than hydrogen

    S → a substrate

    S# → another substrate

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  2. Which one of the following enzymes contains 'Haem' as the prosthetic group?

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  3. The protein portion of an enzyme is called :

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NEET UG 2024 question paper (official, booklet S6)

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  1. The cofactor of the enzyme carboxypeptidase is:

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  2. Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

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  3. Match List I with List II :

    List I:

    A. Lipase

    B. Nuclease

    C. Protease

    D. Amylase

    List II:

    I. Peptide bond

    II. Ester bond

    III. Glycosidic bond

    IV. Phosphodiester bond

    Choose the correct answer from the options given below :

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  4. Regarding catalytic cycle of an enzyme action, select the correct sequential steps :

    A. Substrate enzyme complex formation.

    B. Free enzyme ready to bind with another substrate.

    C. Release of products.

    D. Chemical bonds of the substrate broken.

    E. Substrate binding to active site.

    Choose the correct answer from the options given below :

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NEET UG 2023 question paper (official, booklet G6)

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  1. Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of

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  2. Given below are two statements:

    Statement I: Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.

    Statement II: When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.

    In the light of the above statements, choose the correct answer from the options given below:

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NEET UG 2020 question paper (official, booklet E1)

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  1. Match the following :

    (a) Inhibitor of catalytic activity (i) Ricin

    (b) Possess peptide bonds (ii) Malonate

    (c) Cell wall material in fungi (iii) Chitin

    (d) Secondary metabolite (iv) Collagen

    Choose the correct option from the following :

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NEET UG 2019 question paper (official, booklet P1)

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  1. Consider the following statements :

    (A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group.

    (B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme.

    Select the correct option.

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NEET UG 2017 question paper (official, booklet B)

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  1. Which one of the following statements is correct, with reference to enzymes ?

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NEET UG 2016 Phase 2 question paper (official, booklet ZZ)

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  1. A non-proteinaceous enzyme is

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  2. Which of the following describes the given graph correctly?

    Potential energy vs reaction progress graph with two curves, A (lower hump) and B (higher hump), substrate to product

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