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Which of the following statements is not...

Which of the following statements is not correct

A

All enzymes found in cell are invariably proteins which catalyse biological reactions

B

Enzymes act efficient at a moderate temperature and `pH`

C

Coenzymes increase the activities of enzymes

D

Enzymes arenot specific in their action on substrates

Text Solution

Verified by Experts

The correct Answer is:
D
Enzymes are specific in their action on substrates.
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Knowledge Check

  • Which of the following statement is not correct?

    A
    The reaction `Or_(2)O_(3) +2Al rarr Al_(2)O_(3) + 2Cr` is thermodynamically feasible as is apparent from the Gibbs energy value but it does not take place at room temperature.
    B
    Under certains conditions, `Mg` can reduce `SiO_(2)` and `Si` can rection `MgO`.
    C
    Out of `C and CO,C ` is a better reduction agent than `CO` below `673K` but `CO` is a more effective reducing agent than `C` above `673K`.
    D
    Out of `C and Co,C` is a better readucing equal than `CO` the reduction of `ZnO` is `Zn`

  • Which of the following statement is not correct ?

    A
    The conductance of one `cm^(3)` of a material is called specific conductance
    B
    Specific conductance increases while equivalent conductance decreases with dilution
    C
    The limiting equivalent conductances of weak electrolytes cannot be determined by extrapolation of the pot `lambda^(0)` against concentrtion
    D
    The conductivity of metals is due to the movement of electrons.

  • Which of the following statement is not correct?

    A
    The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium
    B
    Enzymes mainly catalyse biochemical reactions.
    C
    Coenzymes increase the catalytic activity of enzyme.
    D
    Catalyst does not initiate any reaction
    • A2Z-BIOMOLECULES-Section D - Chapter End Test
    1. Which of the following statements is not correct

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    2. The set of reactions in a cell which help in degradation of bigger mo...

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    3. Which of the following statement is not correct ?

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    4. High density polyethylene ( HDPE ) can be prepared from ethylene by

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    5. Which of the following is true about vitamins ?

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    6. Glucose and fructose can be disntiguished by

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    7. D-(+)-Glucoseoverset(5(CH(4)CO)O)rarrD-(+) glucose pentaacetate. Whi...

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    8. Compounds I and II may be grouped as

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    9. Which of the following statement is correct regardiing the drawbacks o...

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    10. What will happen when D-(+)- glucose is treated with methanolic HCl fo...

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    11. Which is true acidic character of hydroxyl groups of sugars and hydrox...

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    12. which of the following forms cationic micelles above certain concentra...

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    13. Which of the nitrogenof histidine is first protonated ?

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    14. An electric current is passed through an aqueous solution ( buffered a...

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    15. Which one of the following is employed as a tranquilizer ?

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    16. The degree of cystallinity of which of the following is highest

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    17. When condensation product of hexamethylenediamine and adipic acid is h...

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    18. In the following series of reactions, compound Z can be Z+NH(3) over...

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    19. Anomers are those stereoisomers which differ in the configuration at

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    20. In osazone formation, glucose reacts with three molecules of phenylhyd...

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