4296550
Description
Quiz by gyorgycrack, updated more than 1 year ago
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Created by gyorgycrack
over 8 years ago
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Question 1
Question
In the Pentose Phosphate System, in which two reactions is NADPH created?
Answer
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- Glucose-6-Phosphate is transformed into 6-Phosphoglucono-δ-lactose - 6-Phosphogluconate is transformed into Ribulose-5-Phosphate
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- Glucose-6-Phosphate is transformed into 6-Phosphogluconate - 6-Phosphogluconate is transformed into Ribulose-5-Phosphate
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- Glucose-6-Phosphate is transformed into 6-Phosphogluconate - Ribulose-5-Phosphate is transformed into Xylulose-5-Phosphate
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- 6-Phosphogluconate is transformed into Ribulose-5-Phosphate - Ribulose-5-Phosphate is transformed into Xylulose-5-Phosphate
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- Glucose-6-Phosphate is transformed into 6-Phosphogluconate - 6-Phosphogluconate is transformed into 6-Phosphoglucono-δ-lactose
Question 2
Question
The two enzymes present in the non-oxidative face of the Pentose Phosphate System are?
Answer
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Transketolases (able to transfer 2C atoms) and transaldolases (able to transfer 3C atoms)
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Transaldolases (able to transfer 2C atoms) and transketolases (able to transfer 3C atoms)
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Transamines (able to transfer 3C atoms) and transaldolases (able to transfer 2C atoms)
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Transaldolases (able to transfer 3C atoms) and transamines (able to transfer 2C atoms)
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Any of these
Question 3
Question
Liver will storage glycogen for the fasting state and muscle storage glycogen for the fed state
Answer
- True
- False
Question 4
Question
What is true about glycogen phosphorylase?
Answer
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1.) Glycogen phosphorylase can only work in the non-reducing ends
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2.) It will stop acting when there are 4 or less residues in a ramification
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3.) Glycogen phosphorylase generates a molecule of Glucogen1P and a molecule of glycogen with a residue less from the degradation of a molecule of glycogen
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Only 1.) and 2.) are true
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All statements are true
Question 5
Question
What happens in a fasting state?
Answer
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In the liver the predominant form of glycogen phosphorylase is the T state and phosphorylated
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In the liver the predominant form of glycogen phosphorylase is the R state and diphosphorylated
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In the muscle the predominant form of glycogen phosphorylase is the R state and phosphorylated
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In the muscle the predominant form of glycogen phosphorylase is the T state and diphosphorylated
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Any of these is true
Question 6
Question
How acts AMP in the production of glycogen phosphorylase?
Answer
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It acts as a inhibitor as glucose in liver
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It acts as an activator as glucose in liver
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It acts as an inhibitor as ATP and glucose-6P in muscle
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It acts as an activator in muscle
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It acts as an activator as ATP and glucose-6P in liver
Question 7
Question
Glucose phosphorylase kinase diphosphorylates glycogen phosphorylase
Answer
- True
- False
Question 8
Question
Complete the text:
In a situation of [blank_start]fasting[blank_end], levels of glucose are [blank_start]low[blank_end]; [blank_start]glucagon[blank_end] is an hormone secreted and it will bind to the receptor that will activate [blank_start]adenylate cyclase[blank_end] that will form AMPc that will activate [blank_start]PKA[blank_end] that is going to phosphorylate glycogen phosphorylase kinase that will phosphorylase [blank_start]glycogen phosphorylase[blank_end].
Answer
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fasting
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low
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glucagon
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adenylate cyclase
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PKA
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glycogen phosphorylase
Question 9
Question
Glycogen synthesize is active when is not phosphorylated
Answer
- True
- False
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