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Which of the following statements about ...

Which of the following statements about enzymes are correct ?
(i) Enzymes do not alter the overall change in free energy for a reaction.
(ii) Enzymes are proteins whose three dimensional energy.
(iii) Enzymes speed up reactions by lowering activation energy.
(iv) Enzymes are highly specific for reactions.
(v) The energy input needed to start a chemical reaction is called activation energy.

A

(i) and (v)

B

(ii) and (iv)

C

(i),(ii) and (iv)

D

All of these

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The correct Answer is:
D
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NCERT FINGERTIPS-BIOMOLECULES-Biomolecules
  1. What is denoted by X and Y in the given graph ?

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  2. Which of the following statements is incorrect regarding enzymatic act...

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  3. Which of the following statements about enzymes are correct ? (i) En...

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  4. Select the right option regarding the given graph.

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  5. Which one of the given graphs shows the effect of pH on the velocity o...

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  6. Which one of the given graphs shows the effect of temperature on the v...

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  7. Enzymes are most functional within the temperature range of

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  8. Which of the following graphs shows the relationship between the rate ...

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  9. Michaelis Menten Constant (K(m)) is equal to

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  10. The inhibitor which closely resembles the substrate in its molecular s...

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  11. inhibition of succinate dehydrogenase by malonate is an example of

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  12. The inhibitor which does not resemble the substrate in structure and b...

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  13. Feedback inhibition of an enzyme is influenced by

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  14. Refer to the given reactin. {:(C(12)H(22)O(11)+H(2)O overset(Enzyme ...

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  15. Enzymes that catalyse removal of groups from substrates by mechanisms ...

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  16. Dihydroxyacetone-3 phosphate and glyceraldehyde-3-phosphate are interc...

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  17. Which of the following is an example of isozyme ?

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  18. Holoenzyme is the complete enzyme consisting of an apoenzyme and a co-...

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  19. The proteinaceous molecule that joins a non-protein prosthetic group t...

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  20. Read the given paragraph with few blanks. Prosthetic groups are unde...

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