NEW!!! L-Lactate Dehydrogenase: Physiology, Biochemisty, and Mechanism
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Science, Biology, Chemistry
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary role of lactate dehydrogenase in humans?
To transport oxygen in the blood
To break down fatty acids
To convert pyruvate to lactate under anaerobic conditions
To synthesize glucose
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does anaerobic fermentation imply about oxygen levels?
Low oxygen levels
No oxygen present
High oxygen levels
Normal oxygen levels
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is NADH critical in the process of glycolysis?
It breaks down pyruvate
It directly produces ATP
It is a reduced coenzyme that is transported into mitochondria
It acts as a substrate for glucose
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to cytochrome C oxidase under low oxygen conditions?
It increases its activity
It converts lactate to pyruvate
It produces more ATP
It shuts down due to lack of substrate
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does lactate dehydrogenase help in regenerating NAD?
By synthesizing ATP
By reducing pyruvate to lactate
By oxidizing glucose
By converting lactate to pyruvate
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the waste product formed when pyruvate is reduced by lactate dehydrogenase?
Glucose
ATP
Acetyl CoA
Lactate
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the histidine residue in the active site of lactate dehydrogenase?
To transport electrons
To bind NADH
To act as a general acid-base catalyst
To stabilize the carboxylate group
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