Asked in Premeth past paper pool — Biology

The given table shows the percentage of product formation in an enzyme-catalysed reaction at different temperatures.

Correct answer: D. D

  • A. A
  • B. B
  • C. C
  • D. D

Explanation

The temperature at which enzyme shows maximum activity is called optimum temperature.Enzyme activity increases up to optimum temperature. So 35 degree Celsius is the optimum temperature here. So D is correct. All others form reduced products so they are incorrect.

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Factors Affecting Enzyme Action

Enzyme activity changes with temperature, pH, substrate concentration and enzyme concentration because these factors affect molecular collisions and the active site. Questions also examine optimum conditions, denaturation and inhibition, while distinguishing a fall in activity caused by unsuitable conditions from permanent enzyme damage.

Practise Enzymes

633 free Enzymes MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Biology questions like this

Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

More Factors Affecting Enzyme Action questions

The graph shows the rate of an enzyme-catalysed reaction at increasing substrateconcentrations.At which of the following point(s) do all active sites of the enzyme seem occupied?

Saqib performed the following steps in sequence as a part of an experiment.1) Added equal amounts of starch solution into two test tubes, I and II2) Added salivary amylase to test tube I and boiled amylase solution to test tube II3) Shook the test tubes and left them in a water bath for 10 minutes at 37°C4) Added a few drops of iodine solution to each test tubeHe observed that the contents of test tube I turned reddish yellow in color, and test tube II maintained its blue color.The CORRECT inference that he must have made based on his observations of test tube I and test tube II is

To evaluate the activity of salivary amylase enzyme, students collected samples (I, II, III andIV) of amylase-starch mixture at different times and added a drop of iodine reagent to each sample.The given table shows the resulting colours and the amount of starch remaining in each sample.Based on the resulting colours of the iodine test, the sample which shows the highest level of amylase activity is

The given table shows the percentage of product formation in an enzyme-catalysed reaction at different temperatures. Which percentage of product formation shows optimum temperature?"

In term of enzyme action, maximum temperature refers to a temperature at which?

At temperature higher than optimum, enzymatic activity decreases because of: