If pH increases in a protein buffer system, which of the following is most likely to occur?
A) The amino group of the amino acid accepts an additional hydrogen ion.
B) Carbon dioxide is converted to carbonic acid.
C) The carboxyl group of the amino acid dissociates, releasing a hydrogen ion.
D) In solution, dihydrogen phosphate reversibly dissociates into a hydrogen ion and monohydrogen phosphate.
E) Carbonic acid dissociates into hydrogen ions and bicarbonate ions.
C) The carboxyl group of the amino acid dissociates, releasing a hydrogen ion.
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The epicardium is the visceral layer of the serous pericardium.
Answer the following statement true (T) or false (F)
Enzymes for the digestion of disaccharides are produced in the ________.
A. stomach B. pancreas C. mouth D. liver E. small intestine
On its way to the esophagus, food normally passes through the __________.
a. pharyngeal sphincter b. lower esophageal sphincter c. oropharynx and laryngopharynx d. oropharynx and laryngopharynx, lower esophageal sphincter, and pharyngeal sphincter
Chemical breakdown of materials by acid and enzymes takes place in the
A) oral cavity. B) esophagus. C) stomach. D) small intestine. E) large intestine.