Biology · Chemistry
Carbohydrates and Biomolecules
1,073 Questions
Carbohydrates and biomolecules questions test your understanding of sugars, monosaccharides, and metabolic substrates. The topic covers food transportation in plants and the biochemical properties of sweeteners. Practicing these questions builds a strong foundation for exam preparation.
Disaccharides and monosaccharidesArtificial sweetenersGlycogen storagePlant food transportGlycoprotein hormones
Carbohydrates and Biomolecules Questions
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Monosaccharides
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Disaccharides
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Polysaccharides
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Oligosaccharides
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All of the above
A
Correct answer
Explanation
The end-products in the digestion of carbohydrates are Monosaccharides.
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Glycogen in liver and muscles
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Glucose in blood
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Lactic acid in muscles
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Glycogen in muscles and spleen
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None of these
A
Correct answer
Explanation
In mammals, excess carbohydrates are stored in the form of Glycogen in liver and muscles.
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lacteals
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blood capillaries
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intervillous space
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intestinal epithelium
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none of these
B
Correct answer
Explanation
Simple sugars which are the products of digestion of carbohydrates are absorbed through blood capillaries.
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Starch is converted into glucose.
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Protein is converted into glucose.
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Glucose is converted into fructose.
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Glucose is converted into pyruvic acid.
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None of these
C
Correct answer
Explanation
In glycolysis, glucose 6 phosphate is converted into fructose 6 phosphate.
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Glucose and galactose
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Maltose and lactose
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Glucose and sucrose
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Glucose and maltose
C
Correct answer
Explanation
Glucose is a reducing sugar whereas sucrose is a non-reducing sugar.
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Sucrose
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Cellulose
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Lactose
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Cellobiose
D
Correct answer
Explanation
Cellobiose is a disaccharide composed of two glucose units linked via β(1→4) glycosidic linkage.
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Polysaccharides contain many monosaccharide units, which may or may not be of the same kind.
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The repeating disaccharide unit in cellulose is cellobiose.
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The repeating disaccharide unit in amylose is lactose.
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Starch is a 1:4 mixture of amylose and amylopectin.
C
Correct answer
Explanation
The repeating disaccharide unit in amylose is maltose.
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sucrose
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glucose
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maltose
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galactose
A
Correct answer
Explanation
Benedict's reagent is used as a test for the presence of reducing sugars. Sucrose is a non-reducing sugar; hence, it will NOT give a positive Benedict's test.
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glucose
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sucrose
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protein
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all of the above
B
Correct answer
Explanation
The sucrose molecule is a disaccharide composed of the monosaccharides glucose and fructose, bonded together by α(1→2)β glycosidic linkage.
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Maltose: Milk sugar
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D glucose: Dextrose
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Glycogen: Animal starch
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Sucrose: Table sugar
A
Correct answer
Explanation
Maltose or malt sugar is a disaccharide formed from two units of glucose.
Lactose is a disaccharide sugar that is found most notably in milk and is formed from galactose and glucose.
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Cellulose
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Chitin
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Arabinoxylans
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Glycogen
D
Correct answer
Explanation
Glycogen is a storage polysaccharide found in nearly all animal cells and in certain protozoa and algae.
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Dabur
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Morepen Laboratories
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Jyothy Laboratories
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World Health Organisation
B
Correct answer
Explanation
Lifelyte is an oral rehydration salt (ORS) product used to treat dehydration, particularly from diarrheal diseases. Morepen Laboratories is a pharmaceutical company that manufactures healthcare products including ORS solutions. Dabur and Jyothy Laboratories are also FMCG/healthcare companies, but Lifelyte was specifically associated with Morepen's product portfolio.
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arginin
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aerosol
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algin
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chitin
C
Correct answer
Explanation
Red algae yields algin, a gummy substance used to thicken cosmetics and food items like ice cream, jelly and chocolate.
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Sucrose
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Glucose
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Maltose
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Starch
B
Correct answer
Explanation
Glucose is the primary form of sugar absorbed into human blood from the digestive tract. During digestion, complex carbohydrates (starch, sucrose, maltose) are broken down into glucose by enzymes. Glucose then enters bloodstream through intestinal walls via active transport and diffusion. Sucrose (option A), maltose (option C), and starch (option D) are too large to be absorbed directly - they must first be converted to glucose.
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Lactose
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Sucrose
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Glucose
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Maltose
C
Correct answer
Explanation
Glucose is a monosaccharide, meaning it consists of a single sugar unit and cannot be broken down into simpler carbohydrates. Lactose and sucrose are disaccharides (two sugar units bonded together), while maltose is also a disaccharide formed from two glucose molecules.