اردو

Home / Practice / Class 10 / Chemistry / Biochemistry

Biochemistry

Written by Dr. Ayesha Nadeem (Chemistry)

9 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
    Show answer

    Correct answer: Amino acids

    Amino acids join through peptide bonds to form proteins.

    Report a mistake

  2. Starch is a polymer of:

    • 1 Ethene
    • 2 Amino acids
    • 3 Glucose
    • 4 Glycerol
    Show answer

    Correct answer: Glucose

    Starch is made of many glucose units.

    Report a mistake

  3. Fats are esters of glycerol and:

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

    Correct answer: Fatty acids

    A fat is formed from glycerol and three fatty acids.

    Report a mistake

  4. Which vitamin is fat soluble?

    • 1 Vitamin A
    • 2 Vitamin C
    • 3 Vitamin B
    • 4 Vitamin B12
    Show answer

    Correct answer: Vitamin A

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

    Report a mistake

  5. Enzymes are biological:

    • 1 Salts
    • 2 Catalysts
    • 3 Fuels
    • 4 Acids
    Show answer

    Correct answer: Catalysts

    Enzymes speed up reactions in living things.

    Report a mistake

  6. Glucose has the formula:

    • 1 C6H12O6
    • 2 C6H6
    • 3 CH4
    • 4 C12H22O11
    Show answer

    Correct answer: C6H12O6

    Glucose is C6H12O6.

    Report a mistake

  7. Which nutrient gives the most energy per gram?

    • 1 Vitamins
    • 2 Fats
    • 3 Proteins
    • 4 Carbohydrates
    Show answer

    Correct answer: Fats

    Fats give about 37 kJ per gram.

    Report a mistake

  8. DNA stores:

    • 1 Genetic information
    • 2 Energy only
    • 3 Water
    • 4 Salts
    Show answer

    Correct answer: Genetic information

    Genes are made of DNA.

    Report a mistake

  9. Cellulose is the main part of:

    • 1 Bones
    • 2 Animal cells
    • 3 Plant cell walls
    • 4 Blood
    Show answer

    Correct answer: Plant cell walls

    Plant cell walls are made of cellulose.

    Report a mistake

More Chemistry topics