In a typical cell, which of the following constitutes least % of the total cellular mass?
1. | Proteins | 2. | Nucleic acids |
3. | Carbohydrates | 4. | Lipids |
Identify the incorrect statement regarding enzyme action:
1. | Formation of [Enzyme Substrate] complex is obligatory |
2. | Enzymes speed up a chemical reaction by lowering the requirement of activation energy |
3. | Substrate need not go through a transition state if the enzyme catalyzed reaction is endothermic |
4. | Enzymes are themselves not used up in the chemical reaction catalyzed by them |
Which of the following is not an example of a secondary metabolite produced in living organisms?
1. | Lecithin | 2. | Alkaloids |
3. | Flavonoids | 4. | Antibiotics |
Which of the following organic compounds is the main constituent of Lecithin?
1. | Arachidonic acid | 2. | Phospholipid |
3. | Cholesterol | 4. | Phosphoprotein |
Consider the given two statements:
I: | In competitive enzyme inhibition, the substrate and inhibitor cannot bind to the enzyme at the same time. |
II: | The inhibitor always has a much higher affinity for the active site than the normal substrate. |
1. | Both I and II are correct and II explains I |
2. | Both I and II are correct but II does not explain I |
3. | I is correct but II is incorrect |
4. | I is incorrect but II is correct |
Consider the following two statements:
I: | Enzyme catalyzed reactions are affected by the change in the temperature and pH. |
II: | Change in pH and temperature affects the tertiary structure of proteins. |
1. | Both I and II are correct and II explains I |
2. | Both I and II are correct but II does not explain I |
3. | I is correct but II is incorrect |
4. | I is incorrect but II is correct |
Consider the given two statements:
I: | Lipids come under acid insoluble fraction. |
II: | Lipids are macromolecules. |
1. | Both I and II are correct and II explains I |
2. | Both I and II are correct but II does not explain I |
3. | I is correct but II is incorrect |
4. | I is incorrect but II is correct |
Assertion (A): | Dietary proteins are the source of essential amino acids. |
Reason (R): | All essential amino acids are aromatic. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
I: | Cellulose does not contain complex helices. |
II: | Inulin is a polymer of fructose. |
III: | Left end of glycogen is the reducing end |
1. | Zinc is a cofactor for carboxypeptidase |
2. | NADP contains the vitamin cyanocobalamin |
3. | Malonate is a competitive inhibitor of Succinic dehydrogenase |
4. | Haem is the prosthetic group in peroxidase |