nne 37. Hydrogen bonding between polar amino acid side chain groups within the s
ID: 198882 • Letter: N
Question
nne 37. Hydrogen bonding between polar amino acid side chain groups within the same polypeptide chain unde of the following levels of protein structure? a) Primary b) Secondary c) Tertiary d) Quaternary e None of the above underl ies 38. Hydrogen bonding between polar amino acid side chain groups between different polypeptide chains which of the following levels of protein structure? a) Primary b) Secondary c) Tertiary d) Quaternary e) None of the above 39, Covalent bonding between -carboxyl groups and -amino groups of amino acids underlies which of the following levels of protein structure? a) Primary b) Secondary c) Tertiary d) Quaternary e) None of the above 40. Which of the following proteins plays an important role in protecting cells from reactive oxygen species? Collagen Keratin Myoglobin-> ? Glutathione-7 Hemoglobin a) b) d) e) 41. CO, is converted to H,CO, by which of the following proteins? a) Glutathione b) Keratin c) Myoglobin d) Carbonic anhydrase e) Hemoglobin 42. Which of the following proteins is a major component of hair? a) Collagen -lenonus Carhlag b) Keratin-haur c) Myoglobin d) Glutathione e) Hemoglobin-carriti D{ 0ubloExplanation / Answer
337. answer: b
The hydrogen bonding within the polypeptide chain between polar groups of aminoacids is comes under secondary structure of the protien.
38. answer: d
The hydrogen bonding between the polypetide chains considered to be quaternary structure of the protien which links two or more protein subunits together.
39. answer: a
The covalent bond between the alfa carboxilic acid and alfa aminogroup is called as peptide bond which denotes primary structure of the protein
40. answer: d
glutathion is a trypeptide contains gly, cys, and glu amino acids. It is an antioxidant present in plant and animals which prevent cellular damage due to reactive oxygen species
41. answer: d
carbonic anhydrage is an enzyme which converts co2 into bicarbonate and helps to maintain acid base balence in the blood and other tissues. It carries co2 out of cells and also so it is important in cellular respiration.
42. answer : b
Keratin is a fibrous protein forming the main structural constituent of hair, feathers, hoofs, claws, horns. It also present in the outer layer of human skin and protects it from stress
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