1.2 Respiration

Question 1

Aerobic Respiration

Answer 1

This is respiration in the presence of oxygen and takes place at a cellular level.
Equation:
Oxygen + Glucose = Carbon dioxide + Water + ATP

Question 2

Anaerobic Respiration

Answer 2

This is respiration in the absence of oxygen and takes place at a cellular level.
Equation:
Glucose = Lactic acid + ATP

Question 3

Difference in ATP

Answer 3

Anaerobic respiration produces less ATP per molecule of glucose than aerobic respiration as there is an incomplete breakdown of glucose.

Question 4

Mucus and Cilia

Answer 4

Mucus traps microbes and prevents them from entering the respiratory system. Cilia wafts this mucus away.

Question 5

Bell jar Model

Answer 5

This model demonstrates inspiration and expiration of the lungs but has some limitations.