Question

the wave action created by muscle contractions that functions to move the food through the digestive system?
a. sphincter
b. peristalsis
c. periscope
d. pericarp
e. systole
value: 10
the enzyme that chemically digest fats?
a. bile
b. lipase
c. triglycerase
d. all of these
value: 10
the organ(s) that produce amylase?
a. pancreas
b. salivary glands
c. liver
d. salivary glands and pancreas
e. all of these
value: 10
where does protein digestion begin?
a. mouth
b. stomach
c. small intestines

Explanation:

• First question: Peristalsis is the wave - like muscle contraction that moves food through the digestive system. A sphincter is a ring - like muscle that constricts an opening. A periscope is an optical instrument. Pericarp is part of a fruit. Systole is related to the contraction of the heart.
• Second question: Lipase is the enzyme that chemically digests fats. Bile emulsifies fats (a physical digestion process, not chemical). There is no such enzyme as triglycerase.
• Third question: Salivary glands produce salivary amylase and the pancreas produces pancreatic amylase. The liver does not produce amylase.
• Fourth question: Protein digestion begins in the stomach. In the mouth, carbohydrate digestion (by amylase) begins. In the small intestine, digestion of various nutrients (including further protein digestion) continues.

Answer:

1. B. peristalsis
2. B. Lipase
3. D. Salivary glands and pancreas
4. B. Stomach