The Digestive System

Question 1

Which best differentiates between chemical digestion and mechanical digestion?

Revolt · Accepted Answer

Chemical digestion involves the breaking down of food with enzymes; mechanical digestion is breaking down food by chewing and tearing with teeth.

Question 2

Imagine that a person has a disorder of the pancreas that does not allow it to secrete digestive enzymes. Which enzyme would be missing to break down DNA and RNA?

Revolt · Accepted Answer

nucleases

Question 3

Which of the following structures are accessory structures of the digestive system?

Revolt · Accepted Answer

pancreas and liver

Question 4

Which of the following structures assist the major structures of the digestive system?

Revolt · Accepted Answer

pancreas, gall bladder, and salivary glands

Question 5

What is the main function of digestion?

Revolt · Accepted Answer

breaking down food into forms that the body can use

Question 6

The small intestine is the pathway for chyme. What else does it do?

Revolt · Accepted Answer

absorbs water, salt, and minerals using villi

Question 7

Maxwell is eating a plain chicken breast. Which enzyme is doing the most work?

Revolt · Accepted Answer

proteases

Question 8

Which substance helps the most in the digestion of food?

Revolt · Accepted Answer

enzymes

Question 9

What is the name of structure B in the image below?

Revolt · Accepted Answer

esophagus

Question 10

When a person is experiencing heartburn, he or she feels a burning sensation in the throat and midchest. Think about the structures of the digestive system. What most likely causes the burning sensation?

Revolt · Accepted Answer

The muscle at the end of the esophagus is not able to close, which allows stomach acid and digested food to go back up into the esophagus.

The Digestive System Answers

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