A three dimensional cavity bearing a specific charge by which the enzyme reacts with its substrate is called?
Correct answer: A. Active site
- A. Active site
- B. Binding site
- C. Catalytic site
- D. Allosteric site
Explanation
Option A: Active site is a groove or a depression on the surface of a substrate into which the enzyme fits. This is the correct option.Option B: Binding site is a region on a macromolecule such as a protein that binds to another molecule with specificity. This is not the correct answer.Option C: Catalytic site is the location where the catalysis of a chemical reaction takes place in an enzyme. This is not the correct answer.Option D: Allosteric regulation is any form of regulation where the regulatory molecule (activator or inhibitor) binds to an enzyme someplace other than the active site. The place where the regulator binds is called the allosteric site. This is not the correct option.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
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 Enzymes questions
The optimum pH for enzyme arginase is?
An enzyme without its cofactor is called:
The pH at which the activity of pancreatic lipase enzyme is maximum is:
The raw material for coenzymes are?
If the non-protien part is loosely attached to the protein part in the enzyme, it forms a _.
The optimum pH for the functioning of pancreatic lipase is _.