2. What is Cellular Respiration?
Once the energy that was in sunlight is changed into chemical energy by photosynthesis, an organism has to transform the chemical energy into a a form that can be used by the organism.
This process is cellular respiration.

3. Describe Cellular Respiration
The breakdown of glucose molecules to release energy for all the life processes.
Takes place in all living organisms

4. Where Does it Occur? Cellular Respiration Occurs in the mitochondria
Here the energy released from glucose is stored in ATP molecules.
Most organisms have these.

5. Glucose molecule
SQA- Describe the fate of CO2 as structural and storage carbohydrates in plants and as energy sources.
Interpretation- sugar made by plants from CO2 and H2O can be:
a) Stored as starch until needed
b) Used to supply energy
c) Used as building material (eg cellulose in plant cell walls).

6. Photosynthesis Reaction
This is why plants absorb in carbon dioxide.
This is why we can eat plants to get energy.
6CO H2O (+ energy)  C6H12O O2
This is why plants need sunlight.
This is why plants need water.
This is why plants produce oxygen.

7. Equation for Cellular Respiration
This is why we eat. Plants don’t eat; they make this with sunlight.
The energy released from the glucose is stored in molecules of ATP for later use.
Glucose
Oxygen
Carbon Dioxide
Water
Energy
The water we can use.
This is why we breathe oxygen.
This is why we breathe out carbon dioxide.

8. Respiration Photosynthesis Gas Balance all the time
glucose + oxygen  carbon dioxide (CO2) + water
Respiration
Photosynthesis
carbon dioxide + water  glucose + oxygen
all the time
daylight only
During the day:
Oxygen released by photosynthesis is greater than the amount of oxygen used up in respiration.
CO2 used in photosynthesis is greater than the amount of CO2 produced by respiration.

10. Plants’ uses of plant glucose
Raw material for growth, repair and replacement of damaged parts
Used immediately to provide energy source for respiration
Energy used to turn sugars, nitrates & other nutrients into amino acids which build up proteins
To make fats & oils (energy stored in seeds)
Glucose
Energy stored as sucrose (in fruit)
Energy stored as starch (in leaves, seeds, roots and tubers)
To make cellulose, the main structural material in cell walls
SQA LO
State that green plants make their own food which may be stored as starch.
Interpretation- green plants are able to make their own food.
Green plants make food in the form of sugar.
The sugar made by the plant is either used straight away or converted to starch and stored

11. Mans’ uses of plant glucose

13. Click for Next Question
Review Question # 1
1. In respiration the released energy is stored in molecules of
A. glucose
B. DNA
C. carbon dioxide
D. ATP
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14. Click for Next Question
Review Question # 1
1. In respiration the released energy is stored in molecules of
A. glucose
B. DNA
C. carbon dioxide
D. ATP
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15. Click for Answer Review Question # 2
2. Which statement about photosynthesis is most correct?
A. The reaction is exothermic.
B. Energy is required to construct the glucose molecules.
C. Energy is released in the reaction.
D. ATP molecules are used to start the reaction.
Click for Answer

16. Click for Next Question
Review Question # 2
2. Which statement about photosynthesis is most correct?
A. The reaction is exothermic.
B. Energy is required to construct the glucose molecules.
C. Energy is released in the reaction.
D. ATP molecules are used to start the reaction.
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17. Click for Answer Review Question # 3
3. Which statement about respiration is not correct?
A. The reaction is exothermic.
B. Energy is required to construct the glucose molecules.
C. Energy is released in the reaction.
D. Energy released is used to create ATP molecules.
Click for Answer

18. Click for Next Question
Review Question # 3
3. Which statement about respiration is not correct?
A. The reaction is exothermic.
B. Energy is required to construct the glucose molecules.
C. Energy is released in the reaction.
D. Energy released is used to create ATP molecules.
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19. Click for Answer Review Question # 4
4. Which chemical is not a product of respiration?
A. carbon dioxide
B. ATP
C. oxygen
D. water
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20. Click for Next Question
Review Question # 4
4. Which chemical is not a product of respiration?
A. carbon dioxide
B. ATP
C. oxygen
D. water
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21. Click for Answer Review Question # 5 5. Chlorophyll A. makes glucose
B. traps sunlight energy
C. produces oxygen
D. produces carbon dioxide
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22. Click for Next Question
Review Question # 5
5. Chlorophyll
A. makes glucose
B. traps sunlight energy
C. produces oxygen
D. produces carbon dioxide
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23. Click for Answer Review Question # 6 6. Where does respiration happen?
A. in the mitochondria
B. in ATP
C. in the chloroplast
D. in glucose molecules
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24. Click for Next Question
Review Question # 6
6. Where does respiration happen?
A. in the mitochondria
B. in ATP
C. in the chloroplast
D. in glucose molecules
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25. Click for Answer Review Question # 7 7. We breathe oxygen because
A. it is needed to make glucose molecules.
B. it is needed to make ATP molecules.
C. it is needed to break apart ATP molecules.
D. it is needed to break apart glucose molecules.
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26. Click for Next Question
Review Question # 7
7. We breathe oxygen because
A. it is needed to make glucose molecules.
B. it is needed to make ATP molecules.
C. it is needed to break apart ATP molecules.
D. it is needed to break apart glucose molecules.
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27. Click for Answer Review Question # 8
8. Which is the correct formula for photosynthesis?
A) C6H12O O2 + energy  6CO H2O B) 6CO H2O  C6H12O O2 + energy
C) 6CO H2O + energy  C6H12O O2
D) C6H12O O2  6CO H2O + energy
Click for Answer

28. 8. Which is the correct formula for photosynthesis?
Review Question # 8
8. Which is the correct formula for photosynthesis?
A) C6H12O O2 + energy  6CO H2O B) 6CO H2O  C6H12O O2 + energy
C) 6CO H2O + energy  C6H12O O2
D) C6H12O O2  6CO H2O + energy

29. Click for Answer Review Question # 9
9. Which is the correct formula for cellular respiration?
A) C6H12O O2 + energy  6CO H2O B) 6CO H2O  C6H12O O2 + energy
C) 6CO H2O + energy  C6H12O O2
D) C6H12O O2  6CO H2O + energy
Click for Answer

30. Click for Next Question
Review Question # 9
9. Which is the correct formula for cellular respiration?
A) C6H12O O2 + energy  6CO H2O B) 6CO H2O  C6H12O O2 + energy
C) 6CO H2O + energy  C6H12O O2
D) C6H12O O2  6CO H2O + energy
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31. Click for Answer Review Question # 10
10. Which statement best shows the relationship between photosynthesis and cellular respiration?
A) They both need the same reacting chemicals.
B) They both produce the same products.
C) They are opposite processes, each needing the other’s products.
D) They are opposite processes, each needing oxygen to occur.
Click for Answer

32. A) They both involve oxygen as a part of the chemical reaction.
Review Question # 10
10. Which statement best shows the relationship between photosynthesis and cellular respiration?
A) They both involve oxygen as a part of the chemical reaction.
B) They both are processes involving energy.
C) They are opposite processes, each needing the other’s products.
D) They are opposite processes, each needing oxygen to occur.