Succinate is converted into fumarate by FAD mediated oxidation by:

1. Fumarase
2. Succinate oxidase
3. Succinate dehydrogenase
4. Phosphofructo-kinase
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Answer: C
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Reversible inhibitors check the reaction rate by?

1. Forming weak linkages with enzyme
2. Forming covalent linkages with enzyme
3. Physically blocking the active site
4. Destroying the globular structure of enzyme
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Answer: A
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In cyclic phosphorylation NADPH2 accumulates and blocks NADP Reductase through:

1. Precursor activation
2. Feedback activation
3. Feedback inhibition
4. Competitive inhibition
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Answer: C
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Effect of which of the following inhibitor can be neutralized by increasing substrate concentration?

1. Reversible inhibitors
2. Irreversible inhibitors
3. Competitive inhibitors
4. Non-competitive inhibitors
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Answer: C
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According to lock and key model enzyme is:

1. Rigid & specific
2. Rigid & non-specific
3. Flexible & specific
4. Flexible & non-specific
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Answer: A
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Activation of enzyme controlled reaction by _________________ is termed as precursor activation.

1. Initial substrate
2. Final product
3. Intermediate substances
4. Inhibitor
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Answer: A
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