photosynthesis

• what type of reaction is photosynthesis

  endothermic
• what is an endothermic reaction

  when it requires energy from it's surroundings
• why is photosynthesis an endothermic reaction

  as it requires energy from the sun to produce glucose
• where does photosynthesis occur

  inside the chloroplasts which are inside the leaves
• what do chloroplasts contain

  a green pigment called chlorophyll
• what is the role of chlorophyll

  it absorbs the sunlight's energy to convert carbon dioxide and water into glucose and oxygen
• equation for photosynthesis


  CO2 + water -> glucose + oxygen
• balanced symbol equation for photosynthesis

  6CO2 + 6h2o -> C6H12O6 + 6O2
• define photosynthesis


  the process where plants / other organisms convert light energy into chemical energy in the form of glucose
• when is this chemical energy released

  when glucose breaks down during respiration
• what are requirements for photosynthesis

  carbon dioxide, water, light, chlorophyll
• what are products of photosynthesis

  glucose, oxygen
• what are the raw materials required for photosynthesis

  co2 and water
• 5 uses of glucose in plants

  • cellular respiration- breaks down glucose to release energy
  • making amino acids- glucose combines with nitrate ions in soil to make proteins
  • making lipids- stores energy as lipids to use later (in seeds)
  • making starch- used as a long- term storage as it is compact and insoluble so it doesn't affect osmosis
  • making cellulose- used to strengthen their cell wall
• what are plants known as and why

  autotrophs as they produce their own food eg: glucose from simple molecules (co2 + water)
• how does a plant obtain co2 and water

  • co2 diffuses from the air into the leaf through the stomata
  • water is absorbed from the roots tot he leaves via the xylem