Carbohydrate metabolism (Dr. Wael Ibrahim)
Mastering Carbohydrate Metabolism
Test your knowledge on carbohydrate metabolism with our comprehensive quiz designed for students and professionals alike. Dive into the intricacies of glycolysis, the Krebs cycle, and more. Whether you're preparing for exams or simply want to enhance your understanding, this quiz offers a challenging and informative experience.
- 30 detailed multiple-choice questions
- Immediate feedback on your answers
- Perfect for students and educators
Disaccharides can be absorbed directly without digestion.
True
False
How many ATP are produced from aerobic glycolysis of one mole of glucose?
2
8
12
38
The number of produced ATP for each acetyl CoA by one Krebs cycle is
2
8
12
38
The first reaction in glycolysis involve conversion of glucose into glucose-6-phosphate by
Aldolase
Phosphatase
Hexokinase
Isomerase
The salivary amylase continues to act up to 30 min in the stomach
True
False
Pancreatic amylase acts on β(1-4) bonds in cellulose in human intestine converting it into glucose
True
False
All the following are true for active transport of glucose except
Sodium Independent
Require ATP
Rapid process
Against concentration gradient
In feeding state, the uptake of glucose from blood capillaries to tissues is enhanced by glucocorticoids and growth hormones
True
False
Which of the following is a major pathway for glucose oxidation?
Hexose monophosphate pathway
Uronic acid pathway
Krebs cycle
All of them
Production of glucuronic acid takes place by
Glycolysis
Krebs cycle
Hexose monophosphate pathway
Uronic acid pathway
Which of the following pathway produce NADPH + H+?
Glycolysis
Krebs cycle
Hexose monophosphate pathway
Uronic acid pathway
Which of the following pathway is the main source of ATP for erythrocytes?
Glycolysis
Krebs cycle
Hexose monophosphate pathway
Uronic acid pathway
Which of the following enter the formation of mucopolysaccharides?
Glucosamine
Galactosamine
Glucoronic acid
All of them
Glucose is converted to sorbitol by
Sorbitol dehydrogenase
Sorbitol oxidase
Aldose reductase
Isomerase
Under anaerobic conditions, glucose is oxidized in the cytosol to form
Acetyl CoA
Pyruvic acid
Lactic acid
Sorbitol
Which of the following contain two carbon atoms?
Acetyl CoA
Pyruvic acid
Lactic acid
B and c
All the following are correct for hexokinase except.
Act on all hexoses
Found in all tissues
Inhibited by Glucose-6-phosphate
Have low affinity to glucose
The first cleavage reaction in glycolysis is catalyzed by
Hexokinase
Phosphofructokinase
Isomerase
Aldolase
Luebering–Rapoport cycle occurs in
Liver
Muscles
Erythrocytes
Kidneys
Pyruvate kinase deficiency leads to
Muscle cramps
Malabsorption
Hemolytic anemia
Blood clotting
The pyruvate dehydrogenase complex is formed of
Two enzymes
Three enzymes
Four enzymes
Five enzymes
Krebs cycle start by condensation of acetyl CoA with .....
Citrate
Oxaloacetate
Isocitrate
Fumarate
Which of the following enzyme catalyzes isomerization of citrate to isocitrate?
Citrate synthase
Isocitrate dehydrogenase
Aconitase
Pyruvate dehydrogenase
How many oxidative decarboxylation reactions in one cycle of TCA?
One
Two
Three
Four
Which of the following enzymes is FAD-linked?
Isocitrate dehydrogenase
Succinate dehydrogenase
Malate dehydrogenase
Fumarase
How many moles of carbon dioxide are formed per one turn of CAC?
One
Two
Three
Four
How many ATP are formed by one TCA cycle per one mole of pyruvate?
8
12
15
38
How many ATP are formed by complete oxidation of one mole of glucose?
8
12
15
38
Which of the following inhibits Krebs cycle?
Insulin
ATP
ADP
NAD+
The main sugar in seminal fluid is
Glucose
Fructose
Lactose
Galactose
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