ATI RN
Digestive System Questions Questions
Question 1 of 5
Salivary amylase and pancreatic amylase are enzymes responsible for the chemical breakdown of
Correct Answer: A
Rationale: Amylase enzymes break down starch into simpler sugars such as maltose during digestion.
Question 2 of 5
The contraction and expansion of the walls of food pipe is called movement.
Correct Answer: A
Rationale: Peristalsis is a type of wave-like movement occurring in the alimentary canal which involves contraction and relaxation of the muscles. It begins in the esophagus and helps to move the food along the alimentary canal for the process of digestion.
Question 3 of 5
Which is the longest organ of digestive system in human body?
Correct Answer: B
Rationale: The small intestine is the longest part of the digestive system, measuring about 7 meters (22 feet). Its main functions are to complete the digestion of food and to absorb nutrients.
Question 4 of 5
Which digestive processes take place in the mouth (buccal) cavity?
Correct Answer: D
Rationale: In the mouth, food undergoes mechanical digestion via chewing, chemical digestion through salivary amylase, and dissolving of nutrients.
Question 5 of 5
Starch is digested to maltose by the enzyme amylase. According to the 'lock and key' hypothesis, which is the 'key' and which is the 'lock'?
Correct Answer: A
Rationale: In the lock and key model, the enzyme (amylase) is the key that specifically binds to the substrate (starch), acting as the lock.