Lock and Key model was proposed by______________?
Correct answer: A. Emil Fischer
- A. Emil Fischer
- B. Koshland
- C. Robin Williams
- D. Rudolph Virchow
Explanation
Emil Fischer proposed the lock-and-key model, in which the substrate has a shape complementary to the enzyme's relatively rigid active site. The likely alternative is Koshland, who proposed the induced-fit model in which the enzyme changes shape as the substrate binds.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Mode of Enzyme Action
Enzyme action depends on the active site forming a temporary enzyme substrate complex, then converting substrate into products with lower activation energy. The lock and key and induced fit models explain specificity and binding, while cofactors and changes in enzyme shape can affect catalysis.
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 Mode of Enzyme Action questions
Which step causes activation of catalytic site of an enzyme__________________?
A three dimensional dcavity bearing a specific charge by which the enzyme reacts with its substrate is called_________________?
Which statement is incorrect about Lock and Key Model________________?
Which of the following statements about the lock and key model is INCORRECT?
The given graph shows the comparison of activation energy in hydrolysis of sucrose with and without an enzyme.
What describes the induced fit model of action of an enzyme?