NEET Biology - New - Biomolecules

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Question - 1

Which of the following are not polymeric?

  • A Nucleic acids
  • B Proteins
  • C Polysaccharides
  • D Lipids

Question - 2

Which one of the following structural formulae of two organic compound is correctly identified along with the related function.

  • A A: Lecithin: a component of cell membrane
  • B B: Adenine: a nucleotide that makes up nucleic acids
  • C A: Triglyceride: major source of energy
  • D B: Uracil: a component of DNA

Question - 3

A typical fat molecule is made up of :

  • A Three glycerol and three fatty acid molecules
  • B Three glycerol molecules and one fatty acid molecule
  • C One glycerol and three fatty acid molecules
  • D One glycerol and one fatty acid molecule

Question - 4

Which biomolecule is correctly characterised?

  • A Lecithin - phosphorylated glyceride found in cell membrane.
  • B Palmitic acid - unsaturated fatty acid with 18 carbon atoms.
  • C Adenylic acid - adenosine with glucose phosphate molecule.
  • D Alanine amino acid - contains an amino acid and an acidic group anywhere in the molecule.

Question - 5

98% of living body is formed of six elements - carbon, hydrogen, nitrogen, oxygen and:

Question - 6

The two functional groups characteristic of sugars are:

  • A Carbonyl and Phosphate
  • B Carbonyl and methyl
  • C Hydroxyl and methyl
  • D Carbonyl and hydroxyl

Question - 7

Which one of the following statements is wrong?

  • A Glycine is a sulphur containing amino acid
  • B Sucrose is a disaccharide
  • C Cellulose is a polysaccharide
  • D Uracil is a pyrimidine

Question - 8

Which one of the following is not applicable to RNA:

  • A Chargaffs rule
  • B Complementary base pairing
  • C 5' phosphoryl and 3' hydroxyl ends
  • D Heterocyclic nitrogenous bases

Question - 9

The chitinous exoskeleton of arthropods is formed by the polymerisation of:

  • A Lipoglycans
  • B Keratin sulphate and Chondroitin glucosamine
  • C D-glucosamine
  • D N-acetyl glucosamine

Question - 10

Macromolecule chitin is:

  • A Phosphorus containing polysaccharide
  • B Sulphur containing polysaccharide
  • C Simple polysaccharide
  • D Nitrogen containing polysaccharide