Q.1
Which of the following is not true about secondary protein structure?
  • a) The hydrophilic/hydrophobic character of amino acid residues is important to secondary structure
  • b) The ability of peptide bonds to form intramolecular hydrogen bonds is important to secondary structure
  • c) The alpha helix, beta pleated sheet and beta turns are examples of protein secondary structure
  • d) The steric influence of amino acid residues is important to secondary structure
Q.2
A structure that has hydrogen bonds between polypeptide chains arranged side by side is ____________
  • a) Primary structure
  • b) α-helix
  • c) β-pleated sheets
  • d) Tertiary structure
Q.3
The enzyme of E.coli is a nuclease that initiates the repair of double stranded DNA breaks by homologous recombination is?
  • a) DNA glycosylase
  • b) DNA ligase
  • c) DNA polymerase
  • d) RNA polymerase
Q.4
Which of the statements is false about multiple sequence alignment?
  • a) Both protein and nucleic acid secondary structures can be used
  • b) More useful in RNA
  • c) These alignments can be made more accurate by the inclusion of secondary structure information
  • d) A significant increase in accuracy
Q.5
Which of the following serves as a bactericidal agent?
  • a) Ribonuclease
  • b) Lysozyme
  • c) Cytochrome c
  • d) Myoglobin
Q.6
Which of the following enzyme is secreted by the pancreas?
  • a) Ribonuclease
  • b) Lysozyme
  • c) Cytochrome c
  • d) Myoglobin
Q.7
Which of the following statement is false?
  • a) Lysozyme has S-S linkage
  • b) Ribonuclease has S-S linkage
  • c) Heme group in cytochrome c is covalently linked to the protein on two sides
  • d) Ribonuclease has SH-SH linkage
Q.8
Which of the following is first determined as oligomer?
  • a) Myoglobin
  • b) Collagen
  • c) Keratin
  • d) Hemoglobin
Q.9
Which of the following is abundantly found in collagen?
  • a) Glycine
  • b) Serine
  • c) Alanine
  • d) Tryptophan
Q.10
Which of the following are important for white blood cell recognition?
  • a) Glycosaminoglycans
  • b) Proteoglycans
  • c) Glycoproteins
  • d) Glycolipids
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