Digestive System

Question 1

What’s three molecules are insoluble?

Answer 1

Starch, protein, fat

Question 2

Enzymes-

Answer 2

Enzymes are specific.
There are 3 main Enzymes in your system.
Fat, protein, starch

Question 3

What happens after enzyme action?

Answer 3

Food molecules are small enough to be absorbed through the small intestine wall.

Question 4

Protein molecule-

Answer 4

A protein molecule is made up of many different amino acids.↩️
Protease breaks down protein molecules↩️
AMINO ACIDS

Question 5

Starch molecules-

Answer 5

A starch molecules is made up of many glucose molecules ↩️
Amylase breaks down starch molecules↩️
GLUCOSE

Question 6

Fat-

Answer 6

A fat molecule is made up of fatty acid and glycerol molecules.↩️
Lipase breaks down fat molecules↩️
GLYCEROL

Question 7

Enzymes shape

Answer 7

Enzymes work by being a particular shape, so they will only fit and digest a particular food type.
Different enzymes are for different shapes.
They work best at body temperature
If temperature or PH not right for the enzyme it changes shaoe and no longer works. (Denatured)

Question 8

Absorption in digestion system…

Answer 8

The small intestine is where the digested food is absorbed into the blood. The blood then transports digestives products around the body.
The small intestine is well suited for digestion.

The large intestine absorbs water and salts from the material that has not been digested as food, and get rid of any waste produces left over.

Question 9

Why is the small intestine good for absorption?

Answer 9

Has thin lining
Good blood supply
Large surface area
(The large surface area is provided by the villi (single=villus) that extend from the inside of the small intestine wall.)

Question 10

Villi job…

Answer 10

The small intestine contains the villi and the villi absorbs the amino acid/ sugars/ glycerol/ fatty acids.
Blood arriving at the villi to pick up food molecules.
Blood leaves villi takes food molecules to the rest of the body.

Question 11

1.What does the mouth do

Answer 11

Contains teeth to break down food

Salivary glands help break up food.

Question 12

2. Where does the food go after being in mouth?

Answer 12

Down the oesophagus

Question 13

After oesophagus?

Answer 13

Into the stomach.

Question 14

What does the stomach do?

Answer 14

Stomach has muscular walls that churn the food.

It contains hydrochloric acids which mix with the churned food.

Question 15

What does the pancreas do?

Answer 15

The pancreas produces enzymes: carbohydrate, protease and lipase enzymes.
They connect to the stomach and break down the starch, fat and sugars.

Question 16

The liver…

Answer 16

The liver produces bile which neutralizes stomach acids so that the enzyme in the stomach can work properly.

Question 17

What’s a duodenum?

Answer 17

It connects the stomach to the small intestine.

Question 18

What does the Small intestine do?

Answer 18

This is where digestion is completed and dissolved food is absorbed into the bloodstream by the villi.

Question 19

What does the large intestine do?

Answer 19

Large intestine receives any food that has not been absorbed into the blood. Water and salt are removed from the food. The remaining solid food is turned into faeces.

Question 20

Where does the faeces go when it comes out of the large intestine?

Answer 20

The rectum.

Question 21

What does the rectum do?

Answer 21

Rictus is where the faeces is stored before they leave the body via the anus.

Question 22

What 3 things that are part of digestion does the food not pass through?

Answer 22

Liver, pancreas, gall bladder.