Respiration: From Air to Energy

Chart showing composition of air including nitrogen oxygen and carbon dioxide
Diagram of a cell releasing energy using oxygen
Diagram showing oxygen and sugar producing energy water and carbon dioxide
Diagram showing respiration experiment with worms in a sealed tube
Diagram showing the journey of air through the human respiratory system
Illustration of air sacs showing oxygen and carbon dioxide exchange
Diagram showing stomata on leaves allowing gas exchange
Diagram comparing gas exchange in plants during day and night
Diagram showing fish gills extracting oxygen from water
Comparison of lungs stomata and gills
Summary infographic showing respiration in humans, plants and fish, air composition, cellular respiration, and gas exchange.

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Summary infographic showing respiration in humans, plants and fish, air composition, cellular respiration, and gas exchange.

PSLE Sc Air and Respiration Summary Mind Map v1.1Download

Topic: Respiration & Breathing

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1. Which gas makes up about 78% of the air we breathe?
2. Which gas is essential for living things to produce energy?
3. Respiration is the process of breaking down ________ to release energy.
4. When do plants carry out respiration?
5. What are the products (outputs) of respiration?
6. Which part of the human respiratory system contains “Air Sacs”?
7. What happens in the Air Sacs?
8. Why do air sacs have very thin walls?
9. Which organ do fish use to breathe?
10. In a fish, water enters through the ________ and exits through the ________.
11. Why are gills red and feather-like?
12. During the day, plants carry out…
13. At night, a plant acts like an animal because it…
14. Where are stomata mainly found?
15. What controls the opening and closing of a stoma?
16. In the sealed tube experiment, why did the ink drop move inwards?
17. In the experiment, what was the function of “Substance L”?
18. Compared to inhaled air, exhaled air has…
19. What do Lungs, Gills, and Stomata have in common?
20. The ultimate goal of respiration is to…
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Section 2: Inputs vs Outputs

Sort the substances into Inputs (Needed) and Outputs (Produced) of Respiration:

Oxygen
Carbon Dioxide
Sugar (Food)
Water
Energy
Food

INPUTS (Used)

OUTPUTS (Produced)

Section 3: The Spark of Life

Complete the description of the respiration process:

Cells
Oxygen
Sugar
Energy
Continuously
Respiration is the process where use to break down . This releases the needed for survival. This happens in both plants and animals.

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