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Protease: Quiz


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Question 1: Proteases are involved in digesting long protein chains into short fragments, splitting the peptide bonds that link ________ residues.
Amino acid synthesisL-DOPAMetabolismAmino acid

Question 2: Proteases are part of many ________.
Primary productionWaterRinsoLaundry detergent

Question 3: Bacteria also secrete proteases to ________ (digest) the peptide bonds in proteins and therefore break the proteins down into their constituent monomers.

Question 4: Here, it is released by ________ and causes activation of complement and kinins.
Mast cellBasophil granulocyteWhite blood cellEosinophil granulocyte

Question 5: A protease is any enzyme that conducts proteolysis, that is, begins protein catabolism by hydrolysis of the peptide bonds that link ________ together in the polypeptide chain forming the protein.
Amino acid synthesisAmino acidL-DOPAMetabolism

Question 6: Proteases belong to the class of enzymes known as hydrolases, which catalyse the reaction of ________ of various bonds with the participation of a water molecule.

Question 7: The threonine and ________ proteases were not described until 1995 and 2004, respectively.
DizocilpineGlutamineGlutamic acidNitrous oxide

Question 8: One way to make a nucleophile is by a catalytic triad, where a histidine residue is used to activate serine, ________, or threonine as a nucleophile.
CysteineAlanineMethionineGlutamic acid

Question 9: Peptidases can either break specific peptide bonds (limited proteolysis), depending on the ________ sequence of a protein, or break down a complete peptide to amino acids (unlimited proteolysis).
MetabolismAmino acid synthesisAmino acidL-DOPA

Question 10: Neutral proteases, notably involved in ________.
Graft-versus-host diseaseSerum sicknessAnaphylaxisAllergy


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