1. Topic- Photosynthesis and respiration
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PiXL GetIT!
GCSE Biology
Topic- Photosynthesis and respiration   
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2. GetIT – Photosynthesis and respiration
Photosynthesis is an endothermic process by which a plant produces its own food.
Respiration is an exothermic process which supplies the body with energy.
Leaves enable photosynthesis to occur
Respiration is not the same thing as breathing and does happen in plants.
Leaves are adapted to perform their function, e.g. they have a large surface area to absorb sunlight. They have many cells that contain chloroplasts which contain chlorophyll.
Most of the chemical reactions involved in the process happen in tiny objects inside the cell cytoplasm, called mitochondria.
Three factors can limit the speed of photosynthesis: light intensity, carbon dioxide concentration and temperature.

3. exo thermic endo This means exit This means heat This means enter
This is when energy is released to the surroundings
This means exit
exo
thermic
endo
This means heat
This means enter
This is when energy is taken in from the surroundings

4. Match IT Photosynthesis Respiration Aerobic Anaerobic Endothermic
Exothermic reaction occuring in cells to release energy
Respiration
Site of aerobic respiration
Aerobic
Endothermic reaction in chloroplasts that uses light energy to react carbon dioxide and water to produce glucose and oxygen
Anaerobic
Without oxygen
Endothermic
With oxygen
Glucose
A simple sugar made by plants and used in respiration.
Mitochondria
Energy is released to the surroundings.
Chloroplast
Small organelle that contains chlorophyll.
Chlorophyll
Energy is taken in from the surroundings.
Exothermic
A green substance that absorbs light energy.

5. Match IT - Answers Photosynthesis Respiration Aerobic Anaerobic
Endothermic reaction in chloroplasts that uses light energy to react carbon dioxide and water to produce glucose and oxygen
Respiration
Exothermic reaction occuring in cells to release energy
Aerobic
With oxygen
Anaerobic
Without oxygen
Endothermic
Energy is taken in from the surroundings.
Glucose
A simple sugar made by plants and used in respiration.
Mitochondria
Site of aerobic respiration
Chloroplast
Small organelle that contains chlorophyll.
Chlorophyll
A green substance that absorbs light energy.
Exothermic
Energy is released to the surroundings.

6. Circle in green the part where photosynthesis happens
Label IT
Photosynthesis
Circle in green the part where photosynthesis happens

7. Label IT- Answers Cell wall Nucleus Vacuole Ribosome Chloroplast
Mitochondria
Cytoplasm
Cell membrane

8. Circle in red the part where respiration happens
Label IT
Circle in red the part where respiration happens
Compound
Chemical formula
Oxygen
Carbon dioxide
Water
Glucose

9. Compound Chemical formula Oxygen O2 Carbon dioxide CO2 Water H2O
Label IT- Answers
Cytoplasm
Ribosome
Nucleus
Mitochondria
Cell membrane
Compound
Chemical formula
Oxygen O2
Carbon dioxide
CO2
Water
H2O
Glucose
C6H12O6

10. Label IT
Photosynthesis
Light + +
Chlorophyll
Respiration + + +

11. + + + + + Photosynthesis Respiration Carbon dioxide Water Oxygen
Label IT- Answers
Photosynthesis
Light
Carbon dioxide +
Water
Oxygen +
Glucose
Chlorophyll
Respiration
Oxygen
Oxygen + +
Glucose
Carbon dioxide +
Energy

12. Answer the 10 questions as quickly as you can…
Get IT
Answer the 10 questions as quickly as you can…
Which gas is needed for photosynthesis?
What type of energy is needed for photosynthesis?
Name the waste product of photosynthesis.
What is a limiting factor?
Tomatoes in a greenhouse grow faster in the carbon dioxide concentration is increased. State the limiting factor here.
Where does respiration happen?
What product leaves the cells and moves into the capillaries in respiration?
What type of respiration needs oxygen?
What does anaerobic mean?
What is the chemical formula for glucose?

13. Factor that can affect the rate of photosynthesis
Which gas is needed for photosynthesis?
What type of energy is needed for photosynthesis?
Name the waste product of photosynthesis.
What is a limiting factor?
Tomatoes in a greenhouse grow faster in the carbon dioxide concentration is increased. State the limiting factor here.
Where does respiration happen?
What product leaves the cells and moves into the capillaries in respiration?
What type of respiration needs oxygen?
What does anaerobic mean?
What is the chemical formula for glucose?
Carbon dioxide
Light
Oxygen
Factor that can affect the rate of photosynthesis
Carbon dioxide
Mitochondria
Carbon dioxide
Aerobic
Without oxygen
C6H12O6