Digestion Quiz

What is the purpose of digestion?

• To build cells and structures

• To extract energy from food

• None of the above

• Both A and B

Where does digestion take place?

• In the brain

• Along the gastrointestinal tract

• In the lungs

• In the bloodstream

What is egestion?

• The process of nutrient absorption

• The production of digestive enzymes

• The excretion of undigested food

• The breakdown of macromolecules

What is the caloric equivalent of protein and carbohydrates?

• 6 kcal/gm

• 4 kcal/gm

• 8 kcal/gm

• 2 kcal/gm

Which vitamins are fat-soluble?

• Vitamin B and C

• Vitamin E and K

• Vitamin C and B

• Vitamin A and D

How many essential amino acids must be obtained in the diet?

• 6

• 4

• 8

• 2

Which fatty acids must be ingested as linolenic acid?

• Neither Omega-3 nor Omega-6

• Both Omega-3 and Omega-6

• Omega-6 (w 6)

• Omega-3 (w 3)

What do lipases do?

• Break down fats

• Break down nucleic acids

• Break down carbohydrates

• Break down proteins

What are the main layers of the intestines?

• Endoderm, Mesoderm, Ectoderm

• Cortex, Medulla, Renal pelvis

• Epidermis, Dermis, Hypodermis

• Mucosa, Submucosa, Circular smooth muscle, Longitudinal smooth muscle

How is gut motility controlled?

• By mechanical contractions

• By hormone signals only

• By nerve signals only

• By both nerve and hormone signals