b8 - Photosynthesis

• What type of reaction is photosynthesis?

  This is an endothermic reaction.
• what happens during photosynthesis?

  Photosynthesis is a chemical reaction in which energy is transferred from the environment as light from the Sun to the leaves of a plant.
• what is chlorophyll used for?

  Chlorophyll, the green pigment in chloroplasts in the leaves, absorbs the light energy
• what is the equation for photosynthesis?

  carbon dioxide + water-----> glucose + oxygen$6CO2 +$$6H2 O---> C6 H12O6 +$$6O2$
• what is a limiting factor?

  A limiting factor is anything that limits the rate of a reaction when it is in short supply
• wha are the limiting factors of photosynthesis?

  The limiting factors for photosynthesis are ● temperature ● carbon dioxide concentration ● light intensity ● amount of chlorophyll.
• how does less chlorophyll affect the rate of photosynthesis?


  Less chlorophyll in the leaves reduces the rate of photosynthesis because less light is absorbed into the plant so not enough energy for photosynthesis to take place affecting the growth of the plant.
• Is photosynthesis a enzyme controlled reaction?

  yes. so if tempretures get to high the enzymes will start to denature
• why is rate of photosynthesis low at low tempretures?

  • At low temperatures the rate of photosynthesis is low because the reactant molecules have less kinetic energy.
• what is the equation for light intesity?

  Equation:

  
• why do greenhouses control limiting factors of photosynthesis?

  Commercial greenhouses control limiting factors to get the highest possible rates of photosynthesis so they can grow plants as quickly as possible or produce the highest yields, whilst still making a profit
• How do plants use the glucose produced in photosynthesis ?

  respiration • convert it into insoluble starch for storage • produce fat or oil for storage • produce cellulose to strengthen cell walls • produce amino acids for protein synthesis