Free Carbohydrates MCQs with Answers
28 Carbohydrates MCQs from Biochemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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- A. Ribose
- B. Glucose
- C. Galactose
- D. Fructose
Explanation: Fructose is highly lipogenic because it is rapidly metabolised in the liver and can enter pathways beyond the main phosphofructokinase…
Correct answer: Fructose- A. Alpha galactosidase
- B. Alpha -Glucosidase
- C. Muscle phosphorylase
- D. Acid Lipase
Explanation: Type II glycogen storage disease, or Pompe disease, results from deficiency of lysosomal acid alpha-glucosidase, also called acid maltase.
Correct answer: Alpha -Glucosidase- A. Starch
- B. Collagen
- C. Cellulose
- D. Inulin
Explanation: Cellulose, a glucose polymer forming plant cell walls, is a major insoluble component of dietary fibre and is not digested by human…
Correct answer: Cellulose- A. Fructose only
- B. Fructose and glucose
- C. Sucrose only
- D. Fructose and sucrose
Explanation: In hereditary fructose intolerance, aldolase B deficiency causes toxic fructose-1-phosphate accumulation.
Correct answer: Fructose and sucrose- A. It usually exists in the furanose form
- B. It is a ketose
- C. It possessesan anomeric C-2 carbon atom
- D. It formspart of the disaccharide sucrose
Explanation: Glucose is an aldohexose that mainly forms a six-membered pyranose ring and has its anomeric carbon at C-1.
Correct answer: It formspart of the disaccharide sucrose- A. Pomper's disease
- B. McArdles syndrome
- C. Von Gierke's disease
- D. Downs syndrome
Explanation: Glucose-6-phosphatase deficiency prevents the final step of glycogenolysis and gluconeogenesis, causing von Gierke disease.
Correct answer: Von Gierke's disease- A. Liver
- B. WBC
- C. Lactating mammary gland
- D. All of the above
- E. Testes
Explanation: The HMP shunt, also called the pentose phosphate pathway, operates in tissues needing NADPH or ribose-5-phosphate, including liver, white…
Correct answer: All of the above- A. 1
- B. 2
- C. 3
- D. 4
Explanation: One six-carbon glucose molecule is split during glycolysis into two three-carbon pyruvate molecules.
Correct answer: 2- A. Hexokinase
- B. Phosphoglycerate kinase
- C. Enolase
- D. Phosphohexose isomerase
Explanation: Phosphoglycerate kinase generates ATP by transferring a phosphate from 1,3-bisphosphoglycerate to ADP.
Correct answer: Phosphoglycerate kinase- A. Muni effect
- B. Hill reaction
- C. Pasteur effect
- D. GluconeogenesisFind Chemistry Tutors
Explanation: The Pasteur effect is the inhibition of glycolysis by oxygen when aerobic respiration becomes available.
Correct answer: Pasteur effect- A. Maltose
- B. Sucrose
- C. Strach
- D. Fructose
Explanation: Fructose is a single sugar unit, so it is a monosaccharide. Maltose and sucrose are disaccharides, while starch is a polysaccharide.
Correct answer: Fructose- A. Isomerisation
- B. Phosphate transfer
- C. Dehydration
- D. Aldol cleavage
Explanation: Glucose 6-phosphate and fructose 6-phosphate have the same molecular formula but differ in the position of the carbonyl group.
Correct answer: Isomerisation- A. Glucose
- B. Surose
- C. Fructose
- D. Maltose
Explanation: Cane sugar is the common name for sucrose, a disaccharide made of glucose and fructose.
Correct answer: Surose- A. Testes
- B. Muscle
- C. Kidneys
- D. Liver
Explanation: The liver has the greatest glycogen concentration per 100 g tissue, commonly about 5 to 10%, whereas skeletal muscle contains a lower…
Correct answer: Liver- A. UTP
- B. GTP
- C. Pyruvate Kinase
- D. Guanosine
Explanation: UTP is required to activate glucose 1-phosphate as UDP-glucose, the immediate donor used by glycogen synthase to build glycogen.
Correct answer: UTP- A. GLUT-2 stimulated by insulin
- B. There is increase in phosphorylation of glucose by glucokinase
- C. Glucokinase has a low Km for glucose
- D. Hexokinase in liver has a high affinity for glucose
Explanation: After a carbohydrate-rich meal, hepatic glucose uptake increases because glucokinase phosphorylates more incoming glucose to glucose…
Correct answer: There is increase in phosphorylation of glucose by glucokinase- A. Maltose
- B. Lactose
- C. Galactose
- D. Sucrose
Explanation: Galactose is a monosaccharide, containing one sugar unit. Lactose, maltose, and sucrose are disaccharides, which belong to the…
Correct answer: Galactose- A. Galactose 1 phosphatase uridyl transferase
- B. Galactose 1 phosphatase
- C. Glucose 1 phosphatase
- D. Glucose 6 phosphatase
Explanation: Classic galactosaemia results from deficiency of galactose-1-phosphate uridyltransferase, which prevents normal conversion of…
Correct answer: Galactose 1 phosphatase uridyl transferase- A. II
- B. I
- C. III
- D. IV
Explanation: Glycogen storage disease type I blocks glucose-6-phosphate utilisation in the liver, causing lactic acidosis and increased uric acid due…
Correct answer: I- A. Glucose
- B. Maltose
- C. Sucrose
- D. Lactose
Explanation: Sucrose is non-reducing because both anomeric carbons are involved in its glycosidic bond, leaving no free hemiacetal group.
Correct answer: SucroseCarbohydrates MCQs: common questions
Are these Carbohydrates MCQs free?
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There are 28 Carbohydrates MCQs in the Biochemistry bank, shown 20 to a page with the correct answer and an explanation on each.
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