Which substance functions to control the release of hydrochloric acid to prevent excessive acidity?
a. Insulin
b. Gastrin
c. Secretin
d. Cholecystokinin
e. Glucagon
Q. 2Which substance regulates the pH of the stomach?
a. Gastrin
b. Insulin
c. Secretin
d. Cholecystokinin
e. Glucagon
Q. 3What is the normal pH of the stomach?
a. 0.25-0.75
b. 1.5-1.7
c. 2.0-2.5
d. 7.5-8.0
e. 8.5-9.0
Q. 4What two systems coordinate all digestive/absorptive processes?
a. Enzyme and thoracic
b. Portal and lymphatic
c. Nervous and endocrine
d. Transport and circulatory
e. Circulatory and nervous
Q. 5Which substance is known to be produced by small intestinal bacteria?
a. Mucus
b. Chyme
c. Glucose
d. Vitamins
e. Protein
Q. 6The gastrointestinal microbiome is comprised primarily of ____.
a. villi
b. bacteria
c. mucosa
d. probiotics
e. viruses
Q. 7When consumed on a regular basis, which food promotes healthful changes in the microflora of the GI tract?
a. Fish
b. Yogurt
c. Poultry
d. Iron-rich foods
e. Natural sugars
Q. 8What is the primary role of the normal, thriving intestinal bacterial population?
a. It helps degrade meat and dairy proteins.
b. It helps prevent infectious bacteria from attacking the system.
c. It synthesizes vitamin D, which can be absorbed into the body.
d. It synthesizes several amino acids, which can be absorbed into the body.
e. It aids in the absorption of essential nutrients.
Q. 9Microorganisms in food that are viable when consumed and that are beneficial to health are known as ____.
a. probiotics
b. prebiotics
c. postbiotics
d. symbiotics
e. abiotics
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