Question

What do a, b and c deplete in the velocity substrate curves of enzyme action?

• A. (a)-normal enzyme reaction, (b)-competitive inhibition, (c)-non-competitive inhibition
• B. (a)-enzyme with allosteric modulator, (b)-normal enzyme reaction, (c)- competitive inhibition
• C. (a)-enzyme with allosteric stimulator, (b)-competitive inhibition, (c)-normal enzyme reaction
• D. (a)-normal enzyme reaction, (b)-non-competitive inhibition, (c)-allosteric inhibition

Answer 1

The correct option is A (a)-normal enzyme reaction, (b)-competitive inhibition, (c)-non-competitive inhibition

If we wanted to show the effects of competitive and non-competitive inhibitors on a graph, we would get results as follows:

1. With a competitive inhibitor, the reaction can eventually reach its normal V_{max}Vmax​, but it takes a higher concentration of substrate to get it there.

2. With a noncompetitive inhibitor, the reaction can never reach its normal V_{max}Vmax​, regardless of how much substrate we add.

So the correct answer is option A "(a)-normal enzyme reaction, (b)-competitive inhibition, (c)-non-competitive inhibition".