1. Monitoring the Activity of the Human Body
Unit G622

2. Learning Objectives
Compare cellular respiration to the burning of fuels. (D)
Describe how the circulatory and respiratory systems both play a part in the process of respiration. (C)
Outline why humans need to respire. (C/B)

3. Combustion
Write the word equation for combustion.

4. Respiration What is respiration?
List the types of respiration and write the word equation for each.

5. Task Compare cellular respiration to the burning of fuels.
Hint: Try to use link words such as ‘whereas’ or ‘on the other hand’.

6. Task
Describe how the circulatory and respiratory systems both play a part in the process of respiration.
Hint:
Think about the sources of the reactants.
Where in the cell respiration happens?

7. Task Outline why humans need to respire.
What is ATP, ADP and cyclic AMP?
How does the human body use these molecules?

8. Respiration is the process by which living things obtain energy for their activities.
State three different processes occurring within the human body which need a supply of energy.
[3]
(b)
Aerobic respiration and anaerobic respiration take place in the human body. They both make energy available to body cells but the way they achieve this differs.
Write a sentence to describe these differences with respect to:
(i)
substrates used
[1]
(ii)
products formed

9. Learning Objectives
Compare cellular respiration to the burning of fuels. (D)
Describe how the circulatory and respiratory systems both play a part in the process of respiration. (C)
Outline why humans need to respire. (C/B)

10. Using Energy Learning Objectives:
Compare cellular respiration to the burning of fuels. (D)
Outline why humans need to respire. (C)
State the difference between aerobic and anaerobic respiration in terms of substrate, products and quantity of energy made available to a respiring cell. (D)
Relate cellular activity to what happens in a muscle cell during various level of physical activity. (C)

11. Differences between aerobic and anaerobic respiration.
What is meant by aerobic respiration?
Write the word equation for the aerobic respiration.
What is meant by anaerobic respiration?
Write the word equation for it.
Which type of respiration release more en energy?

12. Differences between aerobic and anaerobic respiration
Feature
Aerobic
Anaerobic
Substrate
Products
Quantity of energy: molecules of ATP per molecules of glucose.

13. Muscles in Action
Muscle cells will respire aerobically while the supply of oxygen is adequate.
Intensive activity
Demand of oxygen exceed the rate at which it can be supplied to the muscles.
Anaerobic respiration
Ventilation(breathing) and circulatory (heart) rates increase
Carbon dioxide is produced and its concentration increases in the muscles. (which is removed by the circulatory system)
However, the pH in the muscle will be relatively ________ . Muscle actively generates heat
Increase in acidity and temperature encourages release of oxygen from oxyhaemoglobin.
Lactic acid is formed instead of carbon dioxide. And the concentration of this will increase in line with the activity

14. Task

15. ATP Credit – Oxygen Debt
Why your breathing rate continues to be faster than usual for a time , after you finished exercise?

16. Home work
Do task sheet. Due next Wednesday.

17. The effect of exercise on cardio-respiratory performance in fit and unfit individuals
Learning objectives:
To identify hazards and carry out a risk assessment. (D)
Follow set procedures. (D/C)
Record any observations and measurements. (C)
Process and evaluate results. (B)

18. The Heart 3.2.2: Structure and function of the
circulatory and respiratory systems

19. Learning Objectives Describe the structure of the heart, the
roles of the four chambers, the valves
in double circulation.
Describe the characteristic features of arteries, veins and capillaries