Biochemistry Mid - II, November - 2014

1.The secondary structure of proteins is formed by
  • Sub-units
  • peptide bonds
  • beta sheets
  • Active sites
Answer: C
2.Transamination of alanine yields
  • Pyruvate
  • oxaloacetat
  • acetyl co A
  • none
Answer: A
3.Immediate precursor of urea is
  • Carbamoyl phosphate
  • arginine
  • ornithine
  • citrulline
Answer: B
4.Urea is synthesized in
  • Mitochondria
  • ER
  • cytoplasm
  • extracellular
Answer: C
5.Shikimate pathway is not seen in
  • Animals
  • plants
  • bacteria
  • Fungi
Answer: A
6.This is not synthesized by shikimate pathway
  • tyrosine
  • tryptophan
  • phenylalanine
  • alanine
Answer: D
7.This is a simple lipid
  • waxes
  • phospholipids
  • glycolipids
  • lipoproteins
Answer: A
8.Starter molecule for the synthesis of fatty acids is
  • malonyl coA
  • acetyl coA
  • triacyl glycerol
  • none
Answer: B
9.The end product of beta oxidation of odd chain fatty acids is
  • propionyl coA
  • acetyl coA
  • malonylcoA
  • acyl coA
Answer: A
10.The following is called as ‘animal sterol’
  • glycerol
  • hormones
  • cholesterol
  • oil
Answer: C
11.Detergents form________________ molecules.
Answer: Micelles
12.Transamination of uracil gives ________________
Answer: Cytosine
13.Nitrogen bases bond with deoxyribose at ___________ in DNA
Answer: First
14.The end product of purine degradation is _________________.
Answer: Uric acid
15.Guanine is a _______________
Answer: Purine
16.Proteins move towards _______________ in electrophoresis.
Answer: Anode
17.Phosholipids are commonly seen in __________
Answer: Membranes
18.Removal of amine from amino acids in form of ammonia is called______________.
Answer: Deamination
19.______________ Amino acid give yellow colour with ninhydrin .
Answer: Proline
20.Thymine is replced by _______________ in m - RNA
Answer: Uracil