All of the following are true for an enzyme except:
Correct answer: B. Increases the energy of activation
- A. It is a globular protein
- B. Increases the energy of activation
- C. Remains unchanged after reaction
- D. Speeds up the reaction
Explanation
Enzymes are biological catalysts that significantly increase the rate of chemical reactions by lowering the activation energy required for the reaction to proceed. While options A, C, and D are all true statements regarding enzymes, option B is the only false statement, making it the correct answer. Enzymes do not increase the energy of activation; they are designed to make reactions easier and faster by lowering this energy barrier.
Last updated
About Enzymes
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.
Practise Enzymes
633 free Enzymes MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A/An _ is mostly a non-protein chemical compound that is required for the protein's biological activity.
A chemical substance that can react with an enzyme but not transform into a product is called a/an:
A chemical substance that can react with an enzyme faster than a real substrate and without producing a product is
A chemical substance which can react (in place of substrate) with the enzyme but is not transformed into product(s) and thus blocks the active site temporarily or permanently is called:
A chemical substance which can react with an enzyme but not transform into a product is called a/an: