Enzymes and digestion

Question 1

How are digestive Enzymes broken down ? Starch protein and fats are ..

Answer 1

Starch, proteins and fats are big molecules. They’re too big to pass through the walls of the digestive system, so digestive enzymes break these big molecules into smaller ones like sugars, amino acids, glycerol and fatty acids. These smaller, soluble molecules can pass easily through the walls of the digestive system, allowing them to be absorbed into the bloodstream.

Question 2

Carbohydrases covert —– into —–
Include example
Where is Amylase made ?

Answer 2

carbohydrates into simple sugars

Amylase is an example of a carbohydrase. It breaks down starch.

Amylase is made in three places.
1) Salivary glands 2) the pancreas 3) The small intestine

Question 3

Proteases covert —– into ———
Where is proteases made ?

Answer 3

proteins into amino acids

proteases made in 3 places:
- The stomach (pepsin )
- the pancreas
- the small intestine

Question 4

Lipases convert — into ——– and ———–
Where is Lipases made ?

Answer 4

lipids into Glycerol and Fatty acids
Lipases made in 2 places
1) pancreas 2) the small intestine

Question 5

How does the body make good use of the products of digestion ?

Answer 5

They can be used to make new carbohydrates, proteins and lipids. Some of the Glucose that’s made in used in respiration.

Question 6

Where is bile produced and stored ?

Answer 6

in liver, stored in gall bladder before it’s released into small intestine.

Question 7

2 uses of bile

Answer 7

The HCL in the stomach make the pH too acidic for enzymes in the small intestine to work properly. Bile is alkaline - it neutralises the acid and makes conditions alkaline. The enzymes in the small intestine work best in these alkaline conditions.

It emulsifies fat. Breaks fat into tiny droplets. This gives a much bigger SA of fat for the enzyme lipase to work on - which makes its digestion faster.