Digestion

Question 1

Physical Digestion:

Answer 1

Breaking larger chunks of food into smaller chunks w/o changing the structure.

Question 2

Chemical Digestion:

Answer 2

Changing the molecular structure.

Question 3

What does amylase break down?

Answer 3

Starch==> Simple Sugars

Question 4

Where is amylase found?

Answer 4

The mouth

Question 5

Function of oesophagus?

Answer 5

To perform peristalsis.

Question 6

What is Peristalsis?

Answer 6

Muscular contraction by circular muscles.

Question 7

What is HCl for?

Answer 7

Kills microorganisms

Question 8

What does Protease break down?

Answer 8

Protein ==> A-A

Question 9

Where is protease found?

Answer 9

Stomach

Question 10

pH of protease?

Answer 10

3

Question 11

Where is Lipase released?

Answer 11

LARGE intestine

Pancreas

Question 12

What does Lipase break down?

Answer 12

Fats ==> Fatty acids + Glycerol.

Question 13

Optimum pH for lipase?

Answer 13

7

Question 14

What is the function of bile?

Answer 14

Neutralises stomach acid so lipase isn’t denatured.

Emulsifies large droplets of fat to inc SA.

Question 15

Where is bile made?

Answer 15

Made in liver

Question 16

Where is bile stored?

Answer 16

Gall bladder

Question 17

Where is bile released?

Answer 17

Small intestine

Question 18

How is the small intestine adapted for absorption?

Answer 18

Long
Villi/Microvilli inc. SA
Villi surrounded by caps
T/F short diff. dist. AND maintains. conc. grad.

Question 19

Why is fibre needed?

Answer 19

Keeps everything moving through digestive system, W/O = constipation (worse case bowel cancer).

Question 20

What does the large intestine do?

Answer 20

Absorbs water.