Imagine that you discovered an enzyme in the human stomach that turned the substrate "ABC" into the product "XYZ". Name this enzyme (using the standard convention) and describe its chemical characteristics. Under what conditions would it be an effective catalyst? How might its activity be regulated?
What will be an ideal response?
The enzyme "ABCase" would work best at or near human body temperature and at the acidic pH of the stomach. The enzyme is a globular protein that acts as a catalyst. Its activity might be regulated in a variety of fashions described in section 3.3 of the book.
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The alimentary canal extends, in its entirety, from
A. the liver to the gallbladder. B. the stomach to the small intestine. C. the mouth to the anus. D. the mouth to the large intestine.
Gastrin is not secreted during the cephalic phase of gastric secretion
Indicate whether the statement is true or false
Kidney disease can cause hypertension by
A. stimulating the secretion of ANP. B. increasing release (excretion) of sodium and water. C. activating the renin-angiotensin mechanism. D. directly signaling the brain stem to increase blood pressure.
Kidney cells die as early as age
A. 30. B. 50. C. 40. D. 20.