Biochemistry Quiz #02
Biochemistry Challenge: Test Your Knowledge!
Welcome to the Biochemistry Quiz #02! This quiz is designed to test your knowledge of essential biochemical concepts related to glycogen metabolism, electron transport chain mechanics, and enzymatic reactions. Whether you're a student or a biochemistry enthusiast, you'll find it both engaging and informative.
Key Features:
- Multiple choice questions
- Covers diverse biochemistry topics
- Score your knowledge and improve!
If there is a specific chain composed of 15 glucosyl residues (from the non reducing end to the branch point), and it started to be degraded (by the specialized enzymes) from the non-reducing end until removal the branch. The number of glucose monomer expected to be released from the chain:
15
12
11
9
How many H+ will be pumped between succinate dehydrogenase and Cytochrome aa3 Complex?
4
0
2
10
If FADH2 enters ETC, at the end we have about 48 kilojoules of energy calculate the loss energy. (it requires 7 kilojoules to phosphorylate 1ATP)
27
34
14
21
One of the early steps in glycogenesis is formation of UDP-glucose from glucose-1-phosphate and UTP according to the reaction:
Glucose-1-phosphate + UTP → UDP-glucose + PPi
One would expect this reaction to occur spontaneously if ΔG° were large and negative, but in fact, ΔG° for this reaction is nearly zero. What, then, drives the reaction?
Hydrolysis of ATP, forming phosphate, ribose and adenine
Hydrolysis of UTP
Presence of glycogen synthase, a ubiquitous enzyme
Presence of the ubiquitous enzyme pyrophosphatase, which rapidly hydrolyzes pyrophosphate
Liver glycogen contributes to the maintenance of glucose but not muscle glycogen. Which of the following enzyme is absent in muscle?
Glycogen phosphorylase
Hexokinase
Glucose-6-phosphatase
Debranching enzyme
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