macronutrients - carbohydrates

Question 1

Digestion 1: Mouth

Answer 1

salivary amylase: breaks carbs into simple sugars

Question 2

Digestion 2: Small intestine

Answer 2

• carbs broken down into simple sugars by pancreatic amylase
• enzymatic hydrolysis occurs: completes breakdown of carbs into glucose, fructose and galactose

Question 3

Digestion 3: Fibre

Answer 3

• indigestible
• adds bulk to the bowel

Question 4

Absorption: Duodenum (small intestine)

Answer 4

• villi projections absorb glucose into blood capillaries thru single cell wall and then into the blood stream

Question 5

Utilisation:

Answer 5

• primary energy source
• any carb not used = converted to glycogen & stored in liver or muscle tissue