Domain I: Principles of Nutrition

Question 1

How are Carbohydrates digested? (List enzymes and process)

Answer 1

via amylase. Starches are broken down by amylase via hydrolysis into disaccharides and monosaccharides.

Question 2

How are Carbohydrates absorbed? and why? (List process or processes)

Answer 2

via Facilitated diffusion or active transport because these macromolecules are water soluble and cannot readily cross the membrane without help

Question 3

How are fats digested? (List enzymes and process)

Answer 3

via lipase Triglycerides are hydrolyzed by lipase into free fatty acids, monoglycerides, and glycerol

Question 4

How are fats or lipids absorbed? (List process or processes)

Answer 4

Diffusion across the membrane

Question 5

How are proteins digested? (List enzymes and process)

Answer 5

via gastric acid and pepsin. As hydrochloric acid increases, pepsin (a digestive enzyme). This macromolecule is broken down into peptides, dipeptides, tripeptides, and amino acids.

Question 6

How are proteins absorbed?

Answer 6

via facilitated diffusion or active transport. Remember amino acids can be positively or negatively charged.