What is the word equation for photosynthesis?

carbon dioxide + water  ➔  glucose + oxygen

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Where does the energy for photosynthesis come from?

From the sun, in the form of sunlight.

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In which organ does most photosynthesis take place?

Leaf.

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In which organelle (sub-cellular structure) does photosynthesis take place?

Chloroplast.

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Which substance is responsible for absorbing the light energy for photosynthesis?

Chlorophyll.

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How do plants get the carbon dioxide required for photosynthesis?

It diffuses from the air into their leaves, via stomata.

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How do plants get the water required for photosynthesis?

It diffuses from the soil into the root hair cells, via osmosis.

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Give 3 features of starch that make it a useful long-term storage molecule.

1It is insoluble in water.


2It is compact.


3It can easily be broken down when needed.

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Is photosynthesis exothermic or endothermic?

Photosynthesis is an endothermic process, because it requires energy (from the sun).

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What is the symbol equation for photosynthesis?

6CO2 + 6H2O ➔ C6H12O6 + 6O2

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Give 5 ways plants can use the glucose they produce.  

  1. Cellular respiration - break down the glucose to release energy.
  2. Make cellulose - which is used to make strong cell walls.
  3. Make starch - which is used to store glucose for a later time.
  4. Make amino acids - which are used to make proteins.
  5. Make lipids - these store energy as fats or oils, for later use.

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