6.9 - Enzymes And Digestion

Question 1

Define digestion

Answer 1

Large molecules are hydrolysed by enzymes into small molecules

Question 2

Acronym for main organs in the digestive system

Answer 2

Once - oesophagus
Stan - stomach
Incremated - Ileum
Large - large intestine
Raisins - rectum
Stored - salivary glands
Prematurely - pancreas

Question 3

Function of the oesophagus

Answer 3

Food from mouth to stomach

Question 4

Function of stomach
(3)

Answer 4

• Muscular sac with inner layer
• Produces enzymes
• Stored and digests food

Question 5

Function of ileum

Answer 5

• Inner walls folded
• Millions of tiny projections (microvilli) provide large SA
• Absorbs digested products into bloodstream

Question 6

Function of large intestine

Answer 6

Absorbs water from secretion form many digestive glands

Question 7

Function of rectum

Answer 7

Stores faeces and removed via anus by egestion

Question 8

Function of salivary glands

Answer 8

• Contains amylase
• Hydrolyse starch to maltose near mouth

Question 9

Function of pancreas

Answer 9

• Pancreatic juice below stomach
• Juice contains protease, lipase and amylase

Question 10

What does carbohydrase do?

Answer 10

Hydrolyse carbohydrates to monosaccharides

Question 11

What does lipase do?

Answer 11

Hydrolyse lipids to glycerol and fatty acids

Question 12

What does protease do?

Answer 12

Hydrolyse proteins to amino acids