IB Biology Digestive System

Which organ in the human body secretes lipase, amylase and protease?

• Liver

• Small intestine

• Stomach

• Pancreas

Where does the digestion of polypeptides start in humans?

• Mouth

• Esophagus

• Stomach

• Small intestine

Which is a process occurring in the small intestine?

• A

• B

• C

• D

Tags

NGSS.HS-LS2-3

What are functions of the stomach, small intestine and large intestine?

• A

• B

• C

• D

The diagram below shows parts of the human digestive system.

Which points are linked by the small intestine?

• I and III

• II and III

• II and IV

• III and IV

Tags

NGSS.HS-LS1-2

Which of the following parts of the digestive system secrete proteases?

• A

• B

• C

• D

What is the product of digestion by amylase?

• glucose

• maltose

• fructose

• sucrose

Starch is made up of two types of molecule: amylose and amylopectin.

Which row correctly shows the glycosidic bonds present in each of these molecules?

• A

• B

• C

• D

Which of the following is/are true of dextrinase?

I. It converts glucose to dextrins

II. It can break alpha 1,6 glycosidic bonds

III. It is secreted by the pancreas

• II only

• I and II only

• II and III only

• I, II and III

Which of the following reactions can be carried out by amylase?

I. maltose --> amylose

II. amylopectin --> dextrins

III. amylose --> glucose

• II only

• I and II only

• II and III only

• I, II and III