Chapter 16: Q. 16.41 (page 571)
A patient arrives in an emergency department complaining of chest pains. What enzymes would you test for in the blood serum?
amounts in blood serum typically higher after one heart attack.
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Trypsin, a peptidase that hydrolyzes polypeptides, functions in the small intestine at an optimum . How is the rate of a trypsin-catalyzed reaction affected by each of the following conditions?
a. changing the
b. running the reaction at
Adults who are lactose intolerant cannot break down the disaccharide in milk products. To help digest dairy food, a product known as Lactaid can be added to milk and the milk then refrigerated for hours?
a. What enzyme is present in Lactaid, and what is the major class of this enzyme?
b. What might happen to the enzyme if the Lactaid were stored at ?
The following graph shows the activity versuscurves for pepsin, sucrase, and trypsin. Estimate the optimum for each.
Pcpeides froes sweet potato with antioxidant properties has the following sequence of amino acids. Draw the structure for each peptide and write the single-letter abbreviations.
a. Asp-Cys-Gly-Tyr
b. Asn-Tyt-Asp-Gila-Tyr
Consider the amino acids histidine, phenylalanine, and serine in an enzyme. State which of these amino acids have groups that would:
a. be found in hydrophobic regions
b. be found in hydrophilic regions
c. form hydrogen bonds
d. form salt bridges
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