Where is the most water absorbed in the human digestive system?

What is the main function of the large intestine?

Which of the following structures increase the surface area for absorption of digested food in the small intestine?

I. Microvilli

II. Protein pumps

III. Villi

Which of the following structures help the absorption of food by the small intestine?

I. Capillary networks

II. Villi

III. Microvilli

IV. Membrane proteins

Celiac disease causes the destruction of the villi cells.

Which of the following is most likely to happen to people with celiac disease?

Which of the following is/are true of the small intestine?

I. Circular muscles contract to move food forward

II. Longitudinal muscles contract to stop food going backwards

III. Circular muscles are closer to the lumen than longitudinal muscles

Which of the following is/are true of the small intestine?

I. Lacteals transport digested fats

II. Goblet cells produce mucus

III. Nutrients are absorbed across epithelial cells

By what method of transport are fatty acids and monoglycerides absorbed across the plasma membrane?

By what method of transport are triglycerides and cholesterol absorbed across the plasma membrane?

Which of the following are true of active transport?

I. It is against the concentration gradient

II. It uses channel proteins

III. It requires energy released from ATP

Which of the following are needed for vesicle formation or endocytosis?

I. energy released from ATP

II. membrane fluidity

III. Golgi apparatus

Mitochondria are involved in active transport of nutrients across epithelial cell membranes of the small intestine.

Which of the following are true of mitochondria?

I. They have a double membrane

II. They have their own DNA

III. They have 80S ribosomes