Digestive System Quiz

What is the correct order of these terms from smallest to largest?

• Nutrient, microvilli, villi, small intestine

• Microvilli, nutrient, villi, small intestine

• Nutrient, villi, microvilli, small intestine

• Villi, microvilli, nutrient, small intestine

What is the primary function of saliva according to the text?

• To break down food chemically

• To moisten food and begin digestion of certain nutrients

• To cool down the mouth

• To add flavor to food

How are the cells lining the villi organized to aid their function?

• The cells are randomly distributed

• The cells are arranged into microvilli

• The cells are separated by large gaps

• The cells form a single flat layer

Why is having a large surface area important for absorption in the small intestine?

• It decreases the efficiency of nutrient absorption

• It allows for faster food transit

• It provides a large surface area for absorption

• It reduces the contact with nutrients

Which other body part relies on a large surface area to function effectively?

• Heart

• Brain

• Alveoli in the lungs

• Muscles

What is the primary function of enzymes as described in the lesson objectives?

• To provide energy to cells

• To speed up chemical reactions

• To build cell structures

• To store genetic information

Which of the following is NOT listed as a key word in the lesson?

• Enzyme

• Vitamin

• Protein

• Lipid

According to the lesson objectives, what will students be able to describe regarding substrates?

• Their molecular weight

• The enzymes that act on them

• Their solubility in water

• Their color changes during reactions

What are students expected to describe about the products of digestion?

• The energy content of each product

• The products of digestion of each substrate

• The time it takes to digest each substrate

• The temperature at which each substrate is digested

What are enzymes made up of?

• Lipids

• Carbohydrates

• Proteins

• Nucleic acids