Free Carbohydrates MCQs with Answers
115 Carbohydrates MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Carbohydrates are organic compounds classified as monosaccharides, disaccharides and polysaccharides according to their structure and hydrolysis products. The topic covers glycosidic bonds, glucose and fructose, sucrose, lactose and maltose, starch, glycogen and cellulose, along with their roles in energy storage, structural support and food tests.
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115 questions · page 6 of 6
- A. Plants
- B. Animals
- C. Cyanobacteria
- D. Both B and C
Explanation: Glycogen is a complex carbohydrate that serves as a storage form of glucose in animals.
Correct answer: Animals- A. Cellulose
- B. Glycogen
- C. Starch
- D. Lactose
Explanation: Lactose is a disaccharide, not a polysaccharide. It consists of glucose and galactose and is commonly found in milk and dairy products.
Correct answer: Lactose- A. ATP
- B. Calories
- C. ADP
- D. Carbohydrates
Explanation: Amount of energy in food is measured in calories.
Correct answer: Calories- A. Glycogen
- B. Cellulose
- C. Starch
- D. Glucose
Explanation: Glucose is the correct answer because it is a monosaccharide, meaning it is a single sugar unit and not a polysaccharide.
Correct answer: Glucose- A. Monosaccharide
- B. Disaccharide
- C. Polysaccharide
- D. All of the above
Explanation: Sucrose is classified as a disaccharide because it is composed of two monosaccharide units: glucose and fructose.
Correct answer: Disaccharide- A. 2 to 8 units
- B. 2 to 9 units
- C. 2 to 10 units
- D. 2 to 11 units
Explanation: Oligosaccharides are carbohydrates composed of 2 to 10 monosaccharide units.
Correct answer: 2 to 10 units- A. Tollen's reagent test
- B. Fehling's solution test
- C. Benedict solution test
- D. All of the above
Explanation: The correct answer is Option D: All of the above. Tollen's reagent test, Fehling's solution test, and Benedict solution test are all used…
Correct answer: All of the above108. Chitin is a
- A. Lipoprotein
- B. Polysaccharides
- C. Glycoprotein
- D. Phospholipids
Explanation: Chitin is a modified polysaccharide that contains nitrogen. It is a structural carbohydrate found in the exoskeleton of arthropods and the…
Correct answer: Polysaccharides- A. Starch
- B. Cellulose
- C. Sucrose
- D. Glycogen
Explanation: Animal cells store food in the form of glycogen. The excess of glucose in the blood is converted to glycogen in the muscle cells.
Correct answer: Glycogen- A. lonic bond
- B. Hydrogen bond
- C. Peptide bond
- D. Glycosidic bond
Explanation: A glycosidic bond is a type of covalent bond which is formed between two units of monosaccharides
Correct answer: Glycosidic bond- A. Lactose
- B. Maltose
- C. Sucrose
- D. All of the above
Explanation: Maltose is composed of two glucose molecules bonded together. In contrast, lactose consists of one glucose molecule and one galactose…
Correct answer: Maltose- A. 1
- B. 2
- C. 5
- D. 6
Explanation: The ketone functional group in fructose is located on carbon number 2.In fructose, a monosaccharide, the functional group ketone…
Correct answer: 2- A. Monosaccharides
- B. Disaccharides
- C. Oligosaccharides
- D. Polysaccharides
Explanation: Glucose is a simple sugar, also known as a monosaccharide, which means it cannot be broken down into simpler sugars.
Correct answer: Monosaccharides- A. Carbohydrates
- B. Proteins
- C. Lipids
- D. Vitamins
Explanation: Carbohydrates are defined as polyhydroxy aldehydes or ketones, or compounds that yield them on hydrolysis.
Correct answer: Carbohydrates- A. Monosaccharides
- B. Disaccharides
- C. Polysaccharides
- D. None of these
Explanation: Sucrose is a disaccharide: one glucose unit joined to one fructose unit by a glycosidic bond, with the loss of a molecule of water.
Correct answer: Disaccharides