B3 - Organisation & Digestive System

Question 1

What is a tissue?

Answer 1

A tissue is a group of cells with similar structual function

Question 2

What is an organ?

Answer 2

Organs are collections of tissues performing specific functions, organs are usually organised into organ systems which work together to form organisms

Question 3

What is the digestive system?

Answer 3

The digestive system is an example of an organ system, this is in the mammal organ system and helps to digest and absorb food

Question 4

What are all the organs in the digestive system?

Answer 4

Moth, Gullet, Diaphragm, Stomach, Liver, Pancreas, Gall Bladder, Bile Duct, Small Intestine, Large Intestine, Appendix, Rectum, Anus

Question 5

What are catalysts?

Answer 5

Catalysts increase the rate of chemical reactions without changing chemically themselves

Question 6

What are enzymes?

Answer 6

Enzymes are biological catalysts and catalyse specific reactions in living organisms due to the shape of their active site, this is the lock and key theory

Question 7

How is enzyme activity affected?

Answer 7

Can be affected by temperature and pH:
High temperatures denature the enzyme,
pHcan effect the shape of the enzyme changing how efficient it can be or stop if from working