B3 - Organization and the digestive system

Question 1

What is a tissue?

Answer 1

A group of cells with a similar structure and function

Question 2

What is an organ?

Answer 2

An organ is a group of tissue working together for a specific function

Question 3

What is an example of an organ system?

Answer 3

Digestive system

Question 4

What are the 3 main nutrients in food?

Answer 4

Carbs (eg starch) protein and lipids (fats)

Question 5

How do you test for starch?

Answer 5

Put iodine solution to your subject and it should turn a blue/black colour

Question 6

What helps break down the large food molecules?

Answer 6

Enzymes

Question 7

Finish the sentence: In the digestive system, large food…

Answer 7

Molecules are digested into smaller molecules and then absorbed to the bloodstreem

Question 8

What is an enzyme?

Answer 8

A substance that is produced in the body that acts as a catalyst and speed up a chemical reaction.

Question 9

Explain how an enzyme might work

Answer 9

The divert in the enzyme is called the active site.
The substrate (the molecule that needs to be broken down) fits into the enzyme and breaks away for the enzyme to be used again

Question 10

What are proteins broken down by?

Answer 10

Enzymes called proteases

Question 11

Where are proteases found?

Answer 11

Stomach pancreas and small intestine

Question 12

What are proteins also known as?

Answer 12

Amino acids

Question 13

What are the enzymes called that break down starch?

Answer 13

Carbohydrases

Question 14

Where is amylase found?

Answer 14

Saliva and pancreatic fluid

Question 15

What are lipids broken down?

Answer 15

Lipase

Question 16

What is the structure of a fatty acid?

Answer 16

A glycerol molecule and 3 molecules of fatty acids

Question 17

Where is lipase found?

Answer 17

Pancreatic fluid amd small intestine

Question 18

What does bile do?

Answer 18

Increases the surface area for lipids therefore increasing the breakdown by lipase

Question 19

Main sources of carbs?

Answer 19

Potatoes rice bread

Fruit chocolate sweets

Question 20

What are carb functions?

Answer 20

Main source of energy

Question 21

Main sources of proteins

Answer 21

Meat eggs cheese nuts

Question 22

Main source of lipids

Answer 22

Butter processed meat oil seeds

Question 23

Function of the mouth

Answer 23

Saliva begins digestion of carbs

Question 24

Function of stomach

Answer 24

Holds the food while enzymes break it down with acids then released to the small intestine

Question 25

Function of the small intestine

Answer 25

Continues dig of carbs and proteins and begin with lipids

Question 26

What is the pancreas?

Answer 26

Produces digestive enzymes

Question 27

Liver function?

Answer 27

Produces bile

Question 28

Large intestine function

Answer 28

Water is absorbed and flushed to the anus

Question 29

What is the function of the glandular tissue?

Answer 29

Produces digestive juices that break down the food