AQA GCSE Biology Unit 2.4

water + carbon dioxide --> glucose + oxygen

glucose + carbon dioxide --> water + oxygen

glucose + oxygen --> carbon dioxide + water

6H2O + 6CO2 --> C6H12O6 + 6O2

C6H12O6 + 6CO2 --> 6H2O + 6O2

C6H12O6 + 6O2 --> 6CO2 + 6H2O

Adenosine monophosphate, AMP

Adenosine diphosphate, ADP

Adenosine triphosphate, ATP

Using a thermometer to show a rise in temperature which indicates that energy is being released from the peas

Comparing sets of peas with varying concentrations of oxygen to see how long they live

Piping off the gas produced by the respiring peas and bubbling it through limewater to test for carbon dioxide

Antagonistic

Protagonistic

Realistic

Starch

Cellulose

Protein

Glycogen

The air is too polluted so there is too little oxygen in the air

The demand for oxygen in respiring cells exceeds the capacity of the blood vessels for carrying oxygen to them

The nasal cavities become blocked by mucus so too little oxygen can enter the lungs

glucose --> lactic acid

glucose --> carbon dioxide + water

lactic acid --> glucose

glucose --> ethanol

glucose --> ethanol + carbon dioxide

ethanol --> glucose

The brain is fooled into thinking that you are still using your muscles

Breathing out helps to cool down the body's core temperature

Oxygen is needed to completely break down the lactic acid in your muscles

The amount of money owed by scuba divers for oxygen tanks

The amount of oxygen needed to break down lactic acid in your muscles

The amount of oxygen needed to ensure that cardiac muscle has enough energy to continue beating