Quiz  /  NEET MCQ on Biosynthesis

  • 1. 
    Arthropods have an exoskeleton made up of chitin It is a polymer of

  • D-glucosamine
  • keratin sulphate and chondroitin sulphate
  • lipoglycans
  • N-acetyl glucosamine

  • 2. 
    Phosphodiester bond is present in

  • monosaccharides in a polysaccharide
  • fatty acids in a diglyceride
  • nucleic acids in a nucleotide
  • amino acids in a polypeptide

  • 3. 
    An example of a non-reducing carbohydrate is

  • ribose 5­-phosphate
  • lactose
  • sucrose
  • maltose

  • 4. 
    Phosphoglyceride is made up of

  • unsaturated or saturated fatty acids linked to phosphate to which glycerol is attached
  • unsaturated or saturated fatty acids linked to glycerol to which phosphate is attached
  • only saturated fatty acids linked to glycerol to which phosphate is attached
  • only unsaturated fatty acids linked to glycerol to which phosphate is attached

  • 5. 
    Which of the following inhibits the action of succinic dehydrogenase by competitive inhibition?

  • malate
  • oxaloacetate
  • 𝜶-­ketoglutarate
  • None of the above

  • 6. 
    Which of the following is a precursor of amino acid synthesis?

  • fatty acids
  • 𝜶-­ketoglutaric acid
  • mineral salts
  • volatile acids

  • 7. 
    Phosphoenol pyruvate is the primary acceptor for CO

  • C
  • C
  • C
  • both and

  • 8. 
    Which of the following is the primary acceptor for CO

  • PGA
  • PEP
  • RuBP
  • RMP

  • 9. 
    The start condon for protein synthesis is

  • AUG
  • UAA
  • UAG
  • UGA

  • 10. 
    Ribosomal RNA is synthesized in

  • ribosomes
  • lysosomes
  • nucleolus
  • nucleoplasm

  • 11. 
    The First phase of protein synthesis or translation is

  • binding of mRNA to the ribosome
  • anticodon recognition
  • DNA recognition
  • tRNA aminoacylation

  • 12. 
    The enzyme involved in the opening of DNA double helix during transcription

  • DNA helicase
  • DNA ligase
  • RNA polymerase
  • DNA polymerase

  • 13. 
    Which of the following cell organelles is the site of glycoprotein and glycolipid formation?

  • Peroxisomes
  • Polysomes
  • Golgi bodies
  • Endoplasmic reticulum

  • 14. 
    Glycosidic and peptide bonds are present respectively in

  • Glycerol, trypsin
  • Chitin, cholesterol
  • Inulin, Insulin
  • Cellulose, lecithin

  • 15. 
    Which of the following is an important precursor for purine synthesis?

  • Leucine
  • Glutamine
  • Aspartate
  • Glycine

  • 16. 
    Which of the following is an important precursor for pyrimidine synthesis?

  • Leucine
  • Glutamine
  • Aspartate
  • Glycine

  • 17. 
    Erythrose 4-phosphate is a precursor of which amino acid?

  • Tyrosine
  • Phenylalanine
  • Tryptophan
  • All of the above

  • 18. 
    The catecholamines, norepinephrine and epinephrine are derived from

  • arginine
  • tyrosine
  • tryptophan
  • histidine

  • 19. 
    Phospholipids are

  • monoglycerides
  • diglycerides
  • triglycerides
  • Any of the above

  • 20. 
    Precursor of fatty acid synthesis is

  • actoacetyl CoA
  • succinyl CoA
  • propionyl CoA
  • acetyl CoA
Report Question
warning
access_time
  Time