Digestion and absoprtion

Write the correct words to complete the following sentences:

​ (a)   are small finger-like projections on the cells of the small intestine that increase the surface area.

The singular form of villi is ​ (b)  

• Villi
• villus

Select the correct words to complete the sentence below:

By increasing the surface area, villi ​ (a)   absorption, thereby ​ (b)   the surface area: volume ratio.

• increase
• increasing
• decreasing
• decrease

What are the projections on the surface of the epithelial cells of the villi called?

• Microvilli

• Goblet cells

• Secretory cells

• Cilia

What molecule is broken down to produce nitrogenous waste?

• Cellulose

• Lipid

• Protein

• Carbohydrate

What type of enzyme breaks down starch into sugars?

• Protease

• Amylase

• Lipase

• Nuclease

What type of enzyme breaks down protein into amino acids?

• Amylase

• Lipase

• Nuclease

• Protease

What type of enzyme breaks down lipids into fatty acids and glycerol?

• Protease

• Lipase

• Amylase

• Nuclease

Name a part of the digestive system that mechanically digests food.

• saliva

• teeth

• gastric fluids

• chemical

Which of the following answers correctly sequences the pathway food takes from the beginning to end?

• mouth, esophagus, stomach, small intestine, large intestine

• mouth, esophagus, stomach, large intestine, small intestine

• mouth, stomach, esophagus, small intestine, large intestine

• mouth, stomach, esophagus, large intestine, small intestine

In the villi, what is absorbed through the blood capillaries?

• Fatty Acids and Glycerol

• Amino Acids and Glucose

• Amino Acids and Glucose

• Fatty Acids and Glucose