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 4 of 6
- A. Fructose
- B. Sucrose
- C. Lactose
- D. Maltose
Explanation: Option A: Fructose is not a disaccharide. Disaccharides are carbohydrates that are composed of two monosaccharides joined together by a…
Correct answer: Fructose- A. Monosaccharides
- B. Oligosaccharides
- C. Polysaccharides
- D. Carbohydrates
Explanation: Option A: Monosaccharides are the simplest form of carbohydrates and cannot be further hydrolyzed into smaller units.
Correct answer: Monosaccharides- A. C
- B. H
- C. N
- D. O
Explanation: 'Carbohydrates' are primordial and essential compounds, crucial to the body.
Correct answer: N- A. 3
- B. 5
- C. 6
- D. 2
Explanation: Ribofuranose is a type of sugar molecule that contains a furan ring structure.
Correct answer: 5- A. Protein
- B. Lipid
- C. Carbohydrate
- D. None of these
Explanation: The most common fuel of energy for cells is carbohydrate. Carbohydrates are broken down into glucose, which is then used to produce ATP…
Correct answer: Carbohydrate- A. Maltose
- B. Sucrose
- C. Cellobiose
- D. Lactose
Explanation: Out of all the options only sucrose is non reducing as it does not have a free aldehyde or ketone group.
Correct answer: Sucrose- A. glucose, galactose
- B. glucose, fructose
- C. two amino acids must form a peptide bond
- D. nitrogenous base with sugar molecule
Explanation: Lactose forms when two other sugars, glucose and galactose, join together.
Correct answer: glucose, galactose- A. pentose sugars
- B. oligo sugars
- C. triose sugars
- D. manose sugars
Explanation: Glyceraldehyde (glyceral) is a triose monosaccharide with chemical formula C3H6O3. It is the simplest of all common aldoses.
Correct answer: triose sugars- A. Brain
- B. Heart
- C. Blood
- D. Tissues
Explanation: Glycogen is a homopolysaccharide composed of a-glucose. It is a storage carbohydrate for animals.
Correct answer: Blood- A. Phospholipid
- B. Polysacchrides
- C. Carbohydrates
- D. Both Options B and C are correct
Explanation: Option A : Human accumulated glycogen is not an example of phospholipids.
Correct answer: Both Options B and C are correct- A. 2
- B. 5
- C. 10
- D. All of these
Explanation: 'Oligosaccharides' are carbohydrates that contain carbon atoms ranging from 'two to ten' monosaccharides and hence, upon hydrolysis can…
Correct answer: All of these- A. Silk
- B. Wool
- C. Cotton
- D. Paper
Explanation: Cotton is the purest form of cellulose. ''Silk, wool and paper all have other substances.''
Correct answer: Cotton73. A complex substance that, on hydrolysis, yields polyhydroxy aldehyde or ketone subunits is called
- A. Lipid
- B. Carbohydrate
- C. Protein
- D. All of these
Explanation: Carbohydrates are made of hydrocarbons; hence, on hydrolysis, they may yield polyhydroxy aldehyde or ketone subunits.
Correct answer: Carbohydrate- A. Monosaccharides
- B. Disaccharides
- C. Oligosaccharides
- D. Polysaccharides
Explanation: Monosaccharides form rings consisting of five or six carbon atoms (hence they are pyranoses).
Correct answer: Monosaccharides- A. Amylase
- B. Sucrose
- C. Starch
- D. Lactose
Explanation: The carbohydrate that is polymerized through alpha 1,4 glycosidic linkages is starch.
Correct answer: Starch- A. Glucose
- B. Starch
- C. Sucrose
- D. Glycogen
Explanation: Glycogen is a polysaccharide that serves as a form of stored energy in animals and fungi. Glucose is the primary source of energy.
Correct answer: Glycogen- A. Triose
- B. Diose
- C. Monose
- D. None of these
Explanation: Option A is correct as monosaccharides are the simplest forms of carbohydrates.
Correct answer: Triose- A. Liver
- B. Muscles
- C. kidneys
- D. Both a and b
Explanation: Glycogen is stored both in liver and muscles. Muscles because it requires active supply of energy and liver because blood from digestive…
Correct answer: Both a and b- A. Fats
- B. Glycogen
- C. Amino acids
- D. DNA
Explanation: Glycogen is the stored form of glucose in animals. Glyocgen can be hydrolysed to produce glucose to get energy.
Correct answer: Glycogen- A. Monosaccharides
- B. Oligosaccharides
- C. Polysaccharides
- D. Carbohydrates
Explanation: Polysaccharides are major classes of biomolecules. They are long chains of carbohydrate molecules, composed of several smaller…
Correct answer: Polysaccharides