New York State Chemistry RegentsNew York State Earth Science Regents

 
Living Environment Regents August 2010 Question 57 PDF Print E-mail
Friday, 27 May 2011 17:41
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The initial breakdown of protein occurs in the stomach through the action of pepsin. The environment is highly acidic to facilitate the conversion of pepsinogen into pepsin. Pepsin digests proteins and converts them into peptides or amino acids. However, this pH level (the pH level of which? The flow of the argument seems incomplete. Could you explain the sentence further?) is no longer needed to activate the next enzyme that will act on the amino acids and peptides. Trypsinogen is converted into trypsin with the use of another enzyme (enterokinase) in the duodenum.

When fever strikes an individual, the activities of the enzymes are increased. Thus, protein digestion would occur at an abnormal rate.

Enzymes are "reaction-specific," meaning they only function when certain reactants and conditions are available to perform the specific reaction.
 

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