α 12α ααα α°αα³αα½ ααα«α αα
α₯α«ααα½α α¨αα³ααα α΅α ααα₯ α»ααα½ ααα₯ααΉ α΅αα³ααΉα’
α₯α«ααα½α α¨αα³ααα α΅α ααα₯ α»ααα½ ααα₯ααΉ α΅αα³ααΉα’
Forwarded from +π₯°Time for education+
Category 9: Enzyme Regulation and Inhibition (Questions 81-90)
Forwarded from +π₯°Time for education+
Question: What is allosteric regulation?
Anonymous Quiz
31%
A) Binding at the active site
58%
B) Binding at a non-active site
6%
C) Changing pH
5%
D) Denaturation
Forwarded from +π₯°Time for education+
Question: Where does a competitive inhibitor bind?
Anonymous Quiz
29%
A) Allosteric site
17%
B) Substrate
49%
C) Active site
5%
D) Cofactor
Forwarded from +π₯°Time for education+
Question: Can competitive inhibition be overcome?
Anonymous Quiz
70%
A) Yes, by adding more substrate
18%
B) No, itβs permanent
4%
C) Only by heating
7%
D) Only by changing pH
Forwarded from +π₯°Time for education+
Question: Where does a non-competitive inhibitor bind?
Anonymous Quiz
14%
A) Active site
18%
B) Cofactor
11%
C) Substrate
57%
D) Non-active site
Forwarded from +π₯°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 +π₯°Time for education+
Question: What is feedback inhibition?
Anonymous Quiz
65%
A) End product inhibits an early enzyme
22%
B) Substrate inhibits enzyme
7%
C) Enzyme inhibits itself
6%
D) Cofactor inhibits enzyme
Forwarded from +π₯°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
8%
D) Denaturation
Forwarded from +π₯°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
9%
D) By removing substrates
Forwarded from +π₯°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 +π₯°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 +π₯°Time for education+
Category 10: Enzyme Kinetics and Cofactors (Questions 91-100)
Forwarded from +π₯°Time for education+
Question: What does Vmax represent in Michaelis-Menten kinetics?
Anonymous Quiz
47%
A) Maximum substrate concentration
44%
B) Maximum reaction rate
6%
C) Minimum reaction rate
3%
D) Enzyme concentration
Forwarded from +π₯°Time for education+
Question: What is Km in enzyme kinetics?
Anonymous Quiz
19%
A) Maximum velocity
56%
B) Substrate concentration at half Vmax
14%
C) Enzyme concentration
11%
D) Turnover number
Forwarded from +π₯°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 +π₯°Time for education+
Question: What is a holoenzyme?
Anonymous Quiz
19%
A) Inactive enzyme
24%
B) Enzyme without substrate
52%
C) Enzyme with cofactor
6%
D) Denatured enzyme
Forwarded from +π₯°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 +π₯°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 +π₯°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