Chapter 3- Organisation And The Digestive System

Question 1

What is a tissue ?

Answer 1

A group of cells working together with a similar structure and function working together
Example: muscular tissue contraction to bring movement

Question 2

What is an organ ?

Answer 2

Collections of tissues all working together to perform a specific function

Question 3

What does glandular tissue do ?

Answer 3

Produces digestive juices to break down food

Question 4

What is epithelial tissue ?

Answer 4

Covers the inside and the outside of the organs

Question 5

What are the 3 types of organ systems ?

Answer 5

Digestive system/ circulatory system/gas exchange system

Question 6

Salivary glands

Answer 6

Moistures food and releases enzymes to digest food

Question 7

Oesophagus

Answer 7

Moves food into the stomache by peristalsis

Question 8

Stomache

Answer 8

Churns food, kills harmful microbes provides optimum pH for stomache enzymes to break down food

Question 9

Liver

Answer 9

Produces bile and neutralises stomache acids

Question 10

Gall bladder

Answer 10

Stores the bile

Question 11

Pancreas

Answer 11

Produces enzymes for the small intestine

Question 12

Duodenum/large intestine

Answer 12

Absorbs water and solidifies waste

Question 13

Small intestine

Answer 13

Absorbs soluable food

Question 14

Anus

Answer 14

Releases waste

Question 15

What is active site ?

Answer 15

The area on the substrate that the enzyme bonds to

Question 16

Enzyme Substrate complex

Answer 16

Lock and key method, the substrate bonds to the enzyme

Question 17

What do hydrogen bonds do ?

Answer 17

Keep the shape of the enzyme, however the bonds are weak and are effected by temperature and pH

Question 18

Biological catalyst

Answer 18

Bring the activation energy down (less energy needed to start a reaction)