Photosynthesis

• Where does it take place?

  Chlorplasts in the leaves
• What substance is in the chloroplasts that helps photosynthesis?

  Chlorophyll- Absorbs light
• What is the equation for photosynthesis?

  Carbon dioxide + Water = Gluclose + oxygen
• Why does photosynthesis need gluclose the most?

  1. Cellular respiration- breaks down gluclose to realease energy
  2. Cellulose- strengthens cell walls
  3. Amino acids- proteins
  4. Oils and fats
• What factors affects the rate of photosynthesis?

  Chlorophyll, light, carbon dioxide, temperature
• How does chlorophyll affect the rate of photosynthesis?

  More chlorophyll- more light absorbtion- higher rate
• Why does chlorophyll vary in different plants?

  Diseases, environmental stress, lack of nutrients (water)
• On a graph where do the factors of photosynthesis go?

  X axis
• What is it called when the rate stays the same?

  It has plateud- another factor is impacting it causing the rate of photosynthesis not to increase
• Which graph is the different one?

  Temperature
• What happens in a rate/ temp graph?

  1. The rate will increase at the beginning- enzymes working quickly due to high temp- causes molecules to move quicker- higher rate
  2. The rate will then decrease down to 0- enzymes denaturing fully at 45 degrees
• What are some artificial things that help increase the rate of photosynthesis?

  1. Greenhouses- trap heat, artficial lighting, carbon dioxide pumps, enclosed (bugs cant get in)
  2. Fertilisers- allow plants to have enough minerals
  3. Pesticides- kill bugs