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Biochemistry

5 Class 10 Chemistry questions with answers and explanations.

Printable worksheet with answer key

All questions with answers

  1. Proteins are polymers of:

    • 1 Amino acids
    • 2 Nucleotides
    • 3 Fatty acids
    • 4 Glucose
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    Correct answer: Amino acids

    Amino acids join through peptide bonds to form proteins.

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  2. Starch is a polymer of:

    • 1 Ethene
    • 2 Amino acids
    • 3 Glucose
    • 4 Glycerol
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    Correct answer: Glucose

    Starch is made of many glucose units.

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  3. Fats are esters of glycerol and:

    • 1 Sugars
    • 2 Fatty acids
    • 3 Amino acids
    • 4 Alcohol only
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    Correct answer: Fatty acids

    A fat is formed from glycerol and three fatty acids.

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  4. Which vitamin is fat soluble?

    • 1 Vitamin A
    • 2 Vitamin C
    • 3 Vitamin B
    • 4 Vitamin B12
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    Correct answer: Vitamin A

    Vitamins A, D, E and K dissolve in fat.

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  5. Enzymes are biological:

    • 1 Salts
    • 2 Catalysts
    • 3 Fuels
    • 4 Acids
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    Correct answer: Catalysts

    Enzymes speed up reactions in living things.

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More Chemistry topics
Chemical equilibrium
Acids, bases and salts
Organic chemistry
Hydrocarbons
Environmental chemistry: the atmosphere
Environmental chemistry: water
Chemical industries