B9: Respiration

Question 1

What is respiration used for

Answer 1

Movement

To keep warm

Chemical reactions to build larger molecules

Question 2

Aerobic respiration equation

Answer 2

Glucose + oxygen - carbon dioxide + water

C6H12O6 + 6O2 - 6CO2 + 6H2O

Question 3

What happens if oxygen is not present and what is the equation for this

Answer 3

The body anaerobically respires

Glucose - lactic acid

Question 4

What is there not as much energy being transferred from anaerobic respiration than aerobic respiration

Answer 4

This is because the oxidation of glucose is incomplete

Question 5

What’s the anaerobic equation for plants and yeast cells

Answer 5

Glucose - ethanal + carbon dioxide

However in yeast cells anaerobic respiration is called fermentation

Question 6

What is metabolism

Answer 6

This is the sum of all the chemical reactions in a cell or body

Question 7

What’s the uses of glue ode in the plant cell

Answer 7

It’s used to strengthen the cell wall with cellulose

Glucose forms starch which stores glucose

Glucose reacts with nitrate ions to create amino acids to synthesise proteins

Question 8

What is glucose such as in the body

Answer 8

Glucose can be stored in the body as glycogen which is a storage form of glucose

Question 9

How are lipids formed and where are they found

Answer 9

1 glycerol and 3 fatty acids form lipids which lipids are found in the cell membrane