Excessive increase in temperature of medium causes the enzyme molecule to____________?
Correct answer: C. Denatured
- A. Activate
- B. Unaffected
- C. Denatured
- D. None of these
Explanation
Excessive heat disrupts the weak bonds that maintain an enzyme's three-dimensional shape, changing the active site and causing denaturation. A common mistake is choosing activate because moderate warming increases molecular motion, but temperatures beyond the optimum damage the enzyme.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
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
If enzyme concentration is low than substrate pH and temperature values are equal to requirement then which of the following will increase rate of reaction____________________?
Amylase becomes denatured at an alkaline pH of:__________?
Effect of increased substrate concentration on enzyme activity:
If more substrate to already occurring enzymatic reaction is added and there is no effect on the rate of the reaction what is the form given to this situation___________?
If the concentration of enzyme is kept constant and amount of substrate is increased a point is reached where increase in substrates concentration does not affect the reaction rate because of____________________?
The rate of reaction is directly proportional to the concentration of an enzyme which statement is incorrect in this respect_________________?