Biology B2 2.1 Photosynthesis

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What happens during photosynthesis?
Light energy is transferred to chemical energy.
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What are well adapted for photosynthesis?
Leaves.
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What are the only things that can carry out photosynthesis?
Green plants and algae.
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What absorbs the Sun's energy?
Chlorophyll in the chloroplasts.
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What is the word equation for photosynthesis?
Carbon dioxide + water (+ light energy) → glucose + oxygen
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What is the process of photosynthesis?
Carbon dioxide is taken in by leaves and water is taken up by the roots; the chlorophyll traps the light energy needed for photosynthesis; this energy is used to convert the carbon dioxide and water into glucose (a sugar).
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What is released as a by-product of photosynthesis?
Oxygen.
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What happens to some of the glucose produced in photosynthesis?
It is converted into insoluble starch for storage.
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How can we test if photosynthesis has occurred?
Use iodine solution to test leaves to identify the starch in the leaf and show photosynthesis has occurred. Variegated leaves have patches of green (with chlorophyll) and white (without). Green patches show starch has been made; turns iodine blue/bla
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Where does the energy for photosynthesis come from?
Sunlight although artificial light can be used in experiments.
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**MAKE SURE YOU KNOW THE WORD EQUATION FOR PHOTOSYNTHESIS**
**LOOK UP VARIEGATED LEAVES**
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Card 2

Front

What are well adapted for photosynthesis?

Back

Leaves.

Card 3

Front

What are the only things that can carry out photosynthesis?

Back

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Card 4

Front

What absorbs the Sun's energy?

Back

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Card 5

Front

What is the word equation for photosynthesis?

Back

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