Biology ยท 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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Lactose
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Sucrose
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Fructose
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Glucose
A
Correct answer
Explanation
Lactose is a disaccharide sugar composed of glucose and galactose that is naturally present in milk from mammals. It is the primary carbohydrate in dairy products. Sucrose is table sugar, fructose is fruit sugar, and glucose is a simple sugar found in many foods but not primarily in milk.
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Honey
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Jaggery
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Fruit sugars
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None of the above
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Glucose
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Sucrose
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Fructose
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Lactose
A
Correct answer
Explanation
The new Perk chocolate variant formulation highlighted glucose as the sugar type used, differentiating it from regular chocolate bars that primarily use sucrose.
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Bread
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Beer
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Preservatives
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Tuffy
B
Correct answer
Explanation
Maltose is produced when starch breaks down during the germination of barley (malting), which is then fermented by yeast to produce alcohol in beer brewing. While maltose also appears in bread making through starch breakdown, it's most directly and prominently associated with beer production.
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May be
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sometimes
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True
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False
D
Correct answer
Explanation
Unlike the liver and muscles which store significant glucose as glycogen, brain tissue (neurons) cannot store glucose. The brain depends entirely on continuous blood glucose delivery, though astrocytes can store very small amounts of glycogen.
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C8H14O7
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C12H22O11
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C6H10O5
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C20H38O19
B
Correct answer
Explanation
C12H22O11 is the molecular formula for sucrose (cane sugar). C8H14O7 is incorrect, C6H10O5 is the formula for glucose monomers in starch, and C20H38O19 is not a standard sugar formula.
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Lactose
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Glucose
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Sucrose
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Maltose
C
Correct answer
Explanation
Fruits primarily contain sucrose, which is a disaccharide composed of glucose and fructose. While fruits also contain free glucose and fructose in varying proportions depending on the fruit type, sucrose is the dominant sugar form in most fruits, unlike lactose found only in milk or maltose in germinating grains.
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Fructose
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Maltose
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Lactose
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Glucose
C
Correct answer
Explanation
Lactose is the natural sugar present in milk, making up about 4-5% of milk's composition. It is a disaccharide composed of glucose and galactose. Fructose is fruit sugar, maltose is found in germinating grains, and glucose is a simple sugar present in many foods but not specifically characteristic of milk.
A
Correct answer
Explanation
Despite their tart taste, lemons contain more natural sugar per pound than strawberries. Lemons contain about 2-3g sugar per fruit, but they have more sugar by weight compared to strawberries which are approximately 92% water and have only about 8g sugar per cup. The perceived sweetness comes from different sugar compositions and acidity levels.
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Grape sugar
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Cane sugar
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Sweet sugar
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Beet sugar
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cellose
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Lactose
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Glucose
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none
A
Correct answer
Explanation
Rayon is a regenerated cellulose fiber made from cellulose (wood pulp or plant fibers). The term 'cellose' appears to be a typo/variant spelling of cellulose. Lactose and Glucose are sugars, not fiber materials.
C
Correct answer
Explanation
Glucon-D is an energy drink brand owned by Heinz. Parle is known for biscuits and confectionery products like Parle-G, while Kissan is a ketchup and jam brand owned by Hindustan Unilever. Real is a fruit juice brand from Dabur.
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C6H12O6
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C5H10O11
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C12H22O11
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C4H8O10
A
Correct answer
Explanation
Glucose has the chemical formula C6H12O6, representing a six-carbon monosaccharide (simple sugar). C5H10O11 doesn't balance, C12H22O11 is sucrose (table sugar - a disaccharide), and C4H8O10 is not a chemically valid formula.