2.37 describe experiments to investigate the evolution of carbon dioxide and heat from respiring seeds or other suitable living organisms.

Experiments demonstrating the evolution of carbon dioxide and heat:

Germinating Peas:

1)      Soak some peas in water for 24 hours so they start to germinate.

2)      Boil some another batch to kill them.

3)      Disinfect both batches and place them in a vacuum flask around a thermometer

4)      Record the temperatures of both peas

5)      You will find that the temperature in the dead peas’ flask will be 21C and the germinating peas’ will be 24C

6)      This is because the peas are still alive and respiring so this shows that respiration gives off heat. 

2.36 write the word equation for anaerobic respiration in plants and in animals

Anaerobic: (in animals)

Glucose à Lactic acid (lactate) + ATP

Anaerobic: (in plants)

Glucose à Carbon dioxide + Ethanol + ATP

ATP =Adenosine Tri-Phosphate (the chemical energy)

2.35 write the word equation and the balanced chemical symbol equation for aerobic respiration in living organisms

Aerobic:

Glucose + Oxygen à Carbon Dioxide + water + ATP

ATP =Adenosine Tri-Phosphate (the chemical energy)

C₆H₁₂O₆ + 6O₂ à 6CO₂ + 6H₂O + ATP

2.34 describe the differences between aerobic and anaerobic respiration

Types of Respiration:

1)      Aerobic: with oxygen; produces lots of energy

2)      Anaerobic: without oxygen; only some energy produced

2.33 understand that the process of respiration releases energy in living organisms

Respiration: the process of converting oxygen and/or glucose into energy