Photosynthesis

Cards (24)

  • What process must a plant carry out to grow and survive?
    Photosynthesis
  • Where does photosynthesis take place in a plant?
    In the leaves, specifically in chloroplasts
  • What pigment in chloroplasts absorbs light?
    Chlorophyll
  • What does chlorophyll absorb from the environment?
    Light energy
  • What are the reactants in the photosynthesis equation?
    Carbon dioxide and water
  • What is produced alongside glucose during photosynthesis?
    Oxygen
  • What does the equation for photosynthesis look like using chemical symbols?
    6 CO<sub>2</sub> + 6 H<sub>2</sub>O → C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> + 6 O<sub>2</sub>
  • Why is light written above the reaction line in the photosynthesis equation?
    Because the reaction requires light energy
  • What type of reaction is photosynthesis classified as?
    Endothermic reaction
  • How is energy transferred from the environment to chloroplasts?
    By light
  • How does carbon dioxide enter the leaves?
    Through the stomata
  • How is water transported to the leaves?
    Via the xylem
  • What is the main product that plants want from photosynthesis?
    Glucose
  • What do plants sometimes use oxygen for?
    For respiration
  • What are the five main uses of glucose in plants?
    Respiration, cellulose, starch, amino acids, oils
  • How does glucose function in respiration?
    It releases energy when broken apart
  • What is cellulose made from?
    Combined glucose molecules
  • Why is starch a better form of glucose for storage?
    It is more compact and insoluble
  • When do plants typically break down starch to glucose?
    When photosynthesis isn't happening much
  • How do plants make amino acids?
    By combining glucose with nitrate ions
  • What do plants use amino acids to make?
    Proteins
  • What can oils and fats be stored as in plants?
    A future energy resource
  • What factors affect the rate of photosynthesis?
    Light intensity, temperature, CO<sub>2</sub> concentration, chlorophyll amount
  • What are the main functions of glucose in plants?
    • Energy release through respiration
    • Formation of cellulose for cell walls
    • Storage as starch
    • Production of amino acids with nitrate
    • Synthesis of oils and fats