AP Digestion Review

Synthesizes enzymes that digest lipids:

• 1

• 2

• 3

• 4

• 5

Carbohydrate digestion is completed here:

• 1

• 2

• 3

• 4

• 5

Contains villi to increase surface area for the absorption of nutrients:

• 1

• 2

• 3

• 4

• 5

A major function of the lining of the small intestine is

• secretion of hydrochloric acid

• absorption of the products of extracellular digestion

• secretion of pepsin

• secretion of amylase and lipase

• all of these are correct

Which of the following organisms has an incomplete gut and does both intra and extracellular digestion?

• human

• fungi

• bumble bee

• earthworm

• hydra

The function of the acidic stomach is to

A. promote the activity of pepsin

B. stop the activity of salivary amylase

C. kill many bacteria and other microorganisms

D. all of the above are correct.

• activate pepsinogen into pepsin

• stop salivary amylase

• kill bacteria

• allow food to be stored before final digestion

• all of these are correct

An insect generally has a crop to store harvested food, a gizzard to grind it, a midgut to absorb food nutrients, and a hindgut to absorb water. What are, respectively, the equivalent organs in humans?

• teeth – stomach - large intestine - small intestine

• teeth – stomach - small intestine - large intestine

• stomach – teeth – small intestine – large intestine

• stomach – teeth – large intestine – small intestine

• teeth – small intestine – stomach – large intestine

Digestion of proteins begins in the:

• stomach

• mouth

• small intestine

• large intestine

• esophagus

Digestion of carbohydrates begins in the:

• stomach

• mouth

• small intestine

• large intestine

• esophagus

Digestion of lipids begins in the:

• stomach

• mouth

• small intestine

• large intestine

• esophagus