If more substrate is added to an already occurring enzymatic reaction, and more enzyme activity is seen, then this is because of which of the following?
Correct answer: D. There is probably more enzyme available than there is substrate
- A. There is probably more substrate present than there is enzyme
- B. There is probably more product present than there is either substrate or enzyme
- C. The enzyme substrate complex is probably failing to form during the reaction
- D. There is probably more enzyme available than there is substrate
Explanation
When more substrate is added to already occurring enzymatic reaction and it is seen that activity has been increased this means that there are more enzyme available than substrate so that new added substrates make enzyme substrate complex with the available extra enzymes.OPTION A: If there is more substrate than there are enzymes than the product formation ceases and activity of enzyme decreases.OPTION B: It is not possible.OPTION C: One substrate, one enzyme forms one substrate complex and if more substrate is present than this complex fails to be formed.OPTION D: If more enzyme is available than substrate this means that there are more enzyme available than substrate so that new added substrates make enzyme substrate complex with the available extra enzymes.
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Enzymes are biological catalysts that lower activation energy without being consumed, and their specificity is explained by the lock and key and induced fit models. Work includes the effects of temperature, pH and substrate concentration on reaction rate, plus competitive and non-competitive inhibition and how these differ.
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