What is true for all of the enzymes that digest protein?
They are secreted in an inactive form.
They are activated by HCI.
They are secreted by the pancreas.
Their release is stimulated by enterokinase.
The Correct Answer is A
A. They are secreted in an inactive form: major proteases of the GI tract (pepsinogen, trypsinogen, chymotrypsinogen, etc.) are secreted as zymogens (inactive precursors) to prevent autodigestion.
B. They are activated by HCl: pepsinogen is activated by HCl, but pancreatic proteases are activated by trypsin, not HCl, so this is not true for all protein-digesting enzymes.
C. They are secreted by the pancreas: many proteases (e.g., pepsin) are secreted by the stomach, so not all are pancreatic.
D. Their release is stimulated by enterokinase: enterokinase (enteropeptidase) activates trypsinogen to trypsin in the small intestine but does not stimulate the release of all proteases; it is an activator, not a universal release stimulus.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. They are secreted in an inactive form: major proteases of the GI tract (pepsinogen, trypsinogen, chymotrypsinogen, etc.) are secreted as zymogens (inactive precursors) to prevent autodigestion.
B. They are activated by HCl: pepsinogen is activated by HCl, but pancreatic proteases are activated by trypsin, not HCl, so this is not true for all protein-digesting enzymes.
C. They are secreted by the pancreas: many proteases (e.g., pepsin) are secreted by the stomach, so not all are pancreatic.
D. Their release is stimulated by enterokinase: enterokinase (enteropeptidase) activates trypsinogen to trypsin in the small intestine but does not stimulate the release of all proteases; it is an activator, not a universal release stimulus.
Correct Answer is {"dropdown-group-1":"A"}
Explanation
Correct answer: Cervical lymph nodes
Cervical lymph nodes are located along the sides of the neck and drain the scalp, face, and structures of the head and neck; the lymph nodes indicated by the arrow in the neck region correspond to the cervical group.
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