Biochem carb met pud mcq

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  • Created by: Amh
  • Created on: 04-03-16 13:36
Hexokinase is the first enzyme in the glycolytic pathway
true
1 of 41
ATP is produced during synthesis of pyruvate from phosphoenolpyruvate by pyruvate kinase
true
2 of 41
NADPH+ is the cofactor in glycolysis
false
3 of 41
Aldolase catalysis is reversible which in glycolysis cleaves fructose 1,6-bisphosphate and in gluconeogenesis produces fructose 1,6-bisphosphate
true
4 of 41
Lactate is the end-product of glycolysis in vigorously exercised leg white (fast twitch) muscles
true
5 of 41
A. Acetyl CoA and oxalaloacetate are condensed to form citrate
true
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B. Glutamate is produced from a-ketoglutarate
true
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C. GTP is produced by substrate level phosphorylation
true
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D. Malate dehydrogenase requires FAD as reducing cofactor
false
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E. Fumarase dehydrates fumarate to malate
false
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Glycogen is insoluble in water
false
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glycogen contains one reducing glucose residue at its C-1 terminus
true
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glycogen has a backbone formed a1-2 glycosidic bonds
false
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glycogen has a similar shape to amylopepctin
true
14 of 41
glycogen is stored in the liver for release then the blood sugar is low
true
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in glycogen degredation: glycogen phosphorylase hydrolyses 1-4 glycosidic bonds
true
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in glycogen degredation glycogen phosphorylase produces galactose 6-phosphat
false
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in glucogen degredation ATP is required
False
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in glycogen degredation ebranching enzyme cleaves beta1,6 glycosidic bonds to produce free glucose
true
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in glycoge degredation debranching enzyme lengthens the 1-4 backbone
false
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glycogen synthesis requires CDP-glucose as starting substrate
false
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glycogen synthesisB. glycogen synthetase requires glycogenin to produce a primer
true
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glycogen synthesis C. glycogen synthetase forms the 1-4 glycosidic backbone
true
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glycogen synthesis branching and debranching enzyme are the same protein
false
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glycogen synthesis E. branching forms a1-6 glycosidic bonds
true
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Gluconeogenesis produces galactose
false
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Gluconeogenesis requires enzymes present in both the cytosol and mitochondria
true
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Gluconeogenesis utilises lactate as substrate
true
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Gluconeogenesis uses phosphofructokinase to convert fructose 1,6-bisphosphate to fructose 6-phosphate
false
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Gluconeogenesis F. involves PEP carboxylation to oxaloacetate by PEP carboxykinase
true
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The Pentose phosphate pathway A. catalyses the production of 6-phosphogluconolactone from glucose 6-phosphate by glucose 6-phosphate dehydrogenase
true
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The PPP pathway is a net producer of ATP
F
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The pp pathway is a net poducer of ATP
False
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The pp pathway produces octoheptulos 8-phosphate
false
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the pp pathway produces a ribose 5 phosphate
true
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In monosaccharide metabolism Fructose is phosphorylated to fructose-1-phosphate by fructokinase in the liver
true
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In monosaccharide metabolism Fructose aldolase cleaves fructose-1-phosphate to pyruvate and 3-phosphoglycerate
false
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In monosaccharide metabolism C. Galactokinase phosphorylates galactose to galactose-1-phosphate
true
38 of 41
In monosaccharide metabolism D. Galactose disposal requires UDP-glucose
true
39 of 41
In monosaccharide metabolism E. Mannose is phosphorylated to mannose 6-phosphate by hexokinase
true
40 of 41
what is glycogen
the carb storage molecule
41 of 41

Other cards in this set

Card 2

Front

ATP is produced during synthesis of pyruvate from phosphoenolpyruvate by pyruvate kinase

Back

true

Card 3

Front

NADPH+ is the cofactor in glycolysis

Back

Preview of the front of card 3

Card 4

Front

Aldolase catalysis is reversible which in glycolysis cleaves fructose 1,6-bisphosphate and in gluconeogenesis produces fructose 1,6-bisphosphate

Back

Preview of the front of card 4

Card 5

Front

Lactate is the end-product of glycolysis in vigorously exercised leg white (fast twitch) muscles

Back

Preview of the front of card 5
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