Forwarded from +🥰Time for education+
Question: Can competitive inhibition be overcome?
Anonymous Quiz
71%
A) Yes, by adding more substrate
19%
B) No, it’s permanent
4%
C) Only by heating
6%
D) Only by changing pH
Forwarded from +🥰Time for education+
Question: Where does a non-competitive inhibitor bind?
Anonymous Quiz
14%
A) Active site
18%
B) Cofactor
10%
C) Substrate
58%
D) Non-active site
Forwarded from +🥰Time for education+
Question: Can non-competitive inhibition be reversed by substrate?
Anonymous Quiz
33%
A) Yes
44%
B) No
9%
C) Only at high pH
14%
D) Only with cofactors
Forwarded from +🥰Time for education+
Question: What is feedback inhibition?
Anonymous Quiz
65%
A) End product inhibits an early enzyme
23%
B) Substrate inhibits enzyme
7%
C) Enzyme inhibits itself
6%
D) Cofactor inhibits enzyme
Forwarded from +🥰Time for education+
Question: What is covalent modification?
Anonymous Quiz
23%
A) Changing enzyme shape
60%
B) Adding/removing chemical groups
9%
C) Binding inhibitors
7%
D) Denaturation
Forwarded from +🥰Time for education+
Question: How is genetic regulation of enzymes achieved?
Anonymous Quiz
26%
A) By altering enzyme shape
7%
B) By changing pH
57%
C) By controlling enzyme synthesis
10%
D) By removing substrates
Forwarded from +🥰Time for education+
Question: What is an example of covalent modification?
Anonymous Quiz
60%
A) Phosphorylation
8%
B) Denaturation
28%
C) Substrate binding
5%
D) pH change
Forwarded from +🥰Time for education+
Question: What is uncompetitive inhibition?
Anonymous Quiz
57%
A) Inhibitor binds only to enzyme-substrate complex
22%
B) Inhibitor binds to active site
11%
C) Inhibitor binds to substrate
10%
D) Inhibitor denatures enzyme
Forwarded from +🥰Time for education+
Category 10: Enzyme Kinetics and Cofactors (Questions 91-100)
Forwarded from +🥰Time for education+
Question: What does Vmax represent in Michaelis-Menten kinetics?
Anonymous Quiz
46%
A) Maximum substrate concentration
44%
B) Maximum reaction rate
7%
C) Minimum reaction rate
3%
D) Enzyme concentration
Forwarded from +🥰Time for education+
Question: What is Km in enzyme kinetics?
Anonymous Quiz
20%
A) Maximum velocity
56%
B) Substrate concentration at half Vmax
14%
C) Enzyme concentration
11%
D) Turnover number
Forwarded from +🥰Time for education+
Question: What is an apoenzyme?
Anonymous Quiz
25%
A) Enzyme with cofactor
12%
B) Denatured enzyme
18%
C) Active enzyme
44%
D) Enzyme without cofactor
Forwarded from +🥰Time for education+
Question: What is a holoenzyme?
Anonymous Quiz
19%
A) Inactive enzyme
23%
B) Enzyme without substrate
52%
C) Enzyme with cofactor
6%
D) Denatured enzyme
Forwarded from +🥰Time for education+
Question: What is a cofactor?
Anonymous Quiz
9%
A) Substrate
77%
B) Non-protein helper for activity
4%
C) Product
11%
D) Inhibitor
Forwarded from +🥰Time for education+
Question: What is a coenzyme?
Anonymous Quiz
40%
A) Organic molecule aiding enzyme
27%
B) Inorganic ion
30%
C) Protein part
3%
D) Substrate
Forwarded from +🥰Time for education+
Question: Why do some enzymes need cofactors?
Anonymous Quiz
5%
A) To denature
81%
B) To enhance catalytic activity
5%
C) To change pH
9%
D) To reduce specificity
Forwarded from +🥰Time for education+
Question: Which is an example of a cofactor?
Anonymous Quiz
14%
A) Glucose
53%
B) Magnesium ion
25%
C) Amino acid
8%
D) Water
Forwarded from +🥰Time for education+
Question: How does competitive inhibition affect Km and Vmax?
Anonymous Quiz
28%
A) Increases Km, Vmax unchanged
33%
B) Decreases Km, Vmax unchanged
19%
C) Km unchanged, Vmax decreases
20%
D) Both change
Forwarded from +🥰Time for education+
Question : Imagine an enzyme as a superhero saving a cell by speeding up a critical reaction. In the induced fit model, how does this "superhero" enzyme team up with its substrate "sidekick" to save the day?
Anonymous Quiz
41%
A) The enzyme flexes its structure to hug the substrate tightly, like a hero adapting to challenge
33%
B) The enzyme uses its rigid shape to lock the substrate in place, like a key in a vault.
13%
C) The enzyme ignores the substrate and works alone to speed up the reaction.
13%
D) The enzyme permanently changes its shape, sacrificing itself for the reaction.
Forwarded from +🥰Time for education+
Please open Telegram to view this post
VIEW IN TELEGRAM