Class X

Nucleotides consists of
  1. Nitrogenous base
  2. phosphate group
  3. all of above
  4. pentose sugar
Cholesterol comes from
  1. animal products
  2. vegetable products
  3. fruit products
  4. insect products
Layer of fat under mammalian skin acts as an
  1. electric insulator
  2. thermal insulator
  3. protection from germs
  4. protection from viruses
Human body can synthesize only
  1. 12 amino acids
  2. 10 amino acids
  3. 15 amino acids
  4. 5 amino acids
Sugars which rotate plane of polarized light in clockwise direction are called
  1. lactose sugars
  2. complex sugars
  3. dextrose sugars
  4. simple sugars
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