Which of the following amino acid has pKa near neutrality
Q. Which of the following amino acid has pKa near neutrality Tryptophan Arginine Histidine Asparagine Answer: Histidine
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December 2021
Which of the following interaction contributes most in protein folding
Q. Which of the following interaction contributes most in protein folding Covalent bond Ionic bond Hydrophobic interaction Vander walls interaction Answer: Hydrophobic interaction
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The formation of cystine occurs at
Q. The formation of cystine occurs at ER Golgi Cytosol Mitochondria Answer: ER
The characteristic strong absorbance of 280nm of proteins is due to
Q. The characteristic strong absorbance of 280nm of proteins is due to All amino acids can absorb at 280nm Only Tryptophan and tyrosine can absorb at 280 nm Tryptophan is responsible for the absorbance Tryptophan, tyrosine and phenylalanine can absorb at 280 nm Answer: Tryptophan, tyrosine and phenylalanine can absorb at 280 nm
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All the following statements are true except
Q. All the following statements are true except Ornithine and citrulline are uncommon aminoacids Ornithine is an intermediates in Urea cycle Ormithine and citrulline are uncommon amino acids present in many proteins Both ornithine and citrulline are intermediates in urea cycle Answer: Ormithine and citrulline are uncommon amino acids present in many proteins Girl in
Tri-peptide consists
Q. Tri-peptide consists 3 amino acids and 3 peptide bonds 2 amino acids and 3 peptide bonds 3 amino acids and 2 peptide bonds 3 amino acids and 4 peptide bonds Answer: 3 amino acids and 2 peptide bonds
Peptide bonds between amino acids are highly stable and have a half-life of seven years in intracellular condition. This is due to
Q. Peptide bonds between amino acids are highly stable and have a half-life of seven years in intracellular condition. This is due to High activation energy required for hydrolysis Low activation energy required for hydrolysis Peptide bond is a covalent bond Peptide bond is rigid and planar Answer: High activation energy required for hydrolysis
4-hydroxy proline is present in
Q. 4-hydroxy proline is present in Collagen Plant cell wall Keratin Both plant cell wall and collagen Answer: Both plant cell wall and collagen
ATP concentration is maintained relatively constant during muscle contraction by
Q. ATP concentration is maintained relatively constant during muscle contraction by increasing the metabolic activity the action of adenylate kinase theaction of creatne phosphokinase all of the above Answer: all of the above
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Lysis of a fibrin clot:
Q. Lysis of a fibrin clot: is an equibrium wwith formation of the clot begins when plasmin binds to the clot requires the hydrolysis of plasminogen into heavy and light chains requires conversion of plasminogen by tissue plasminogen activator Answer: requires conversion of plasminogen by tissue plasminogen activator