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حیاتی کیمیا

دسویں جماعت · کیمیا · 9 سوالات

نام: ____________________   تاریخ: ____________

  1. Proteins are polymers of:

    • A Amino acids
    • B Nucleotides
    • C Fatty acids
    • D Glucose
  2. Starch is a polymer of:

    • A Ethene
    • B Amino acids
    • C Glucose
    • D Glycerol
  3. Fats are esters of glycerol and:

    • A Sugars
    • B Fatty acids
    • C Amino acids
    • D Alcohol only
  4. Which vitamin is fat soluble?

    • A Vitamin A
    • B Vitamin C
    • C Vitamin B
    • D Vitamin B12
  5. Enzymes are biological:

    • A Salts
    • B Catalysts
    • C Fuels
    • D Acids
  6. Glucose has the formula:

    • A C6H12O6
    • B C6H6
    • C CH4
    • D C12H22O11
  7. Which nutrient gives the most energy per gram?

    • A Vitamins
    • B Fats
    • C Proteins
    • D Carbohydrates
  8. DNA stores:

    • A Genetic information
    • B Energy only
    • C Water
    • D Salts
  9. Cellulose is the main part of:

    • A Bones
    • B Animal cells
    • C Plant cell walls
    • D Blood

جوابی کلید

1. A, 2. C, 3. B, 4. A, 5. B, 6. A, 7. B, 8. A, 9. C

  1. Amino acids join through peptide bonds to form proteins.

  2. Starch is made of many glucose units.

  3. A fat is formed from glycerol and three fatty acids.

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

  5. Enzymes speed up reactions in living things.

  6. Glucose is C6H12O6.

  7. Fats give about 37 kJ per gram.

  8. Genes are made of DNA.

  9. Plant cell walls are made of cellulose.