Photosynthesis

    Cards (21)

    • 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 for photosynthesis?
      Chlorophyll
    • What does chlorophyll absorb from the environment?
      Light energy
    • What are the reactants in the photosynthesis equation?
      Six molecules of carbon dioxide and six molecules of water
    • What is produced as a result of photosynthesis?
      Glucose and oxygen
    • What is the chemical equation for photosynthesis in 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 energy written above the reaction line in the photosynthesis equation?
      Because the reaction requires light energy to take place
    • What type of reaction is photosynthesis classified as?
      An endothermic reaction
    • How does energy transfer occur in photosynthesis?
      Energy is transferred from the environment to chloroplasts by light
    • How does carbon dioxide enter the leaves of a plant?
      Through the stomata
    • How is water transported to the leaves of a plant?
      By the xylem
    • What is the primary product that plants want from photosynthesis?
      Glucose
    • What do plants sometimes use the oxygen produced in photosynthesis for?
      For respiration
    • What is one way glucose is used by plants?
      For cellular respiration to release energy
    • What are the five main uses of glucose in plants?
      1. Cellular respiration (energy release)
      2. Making cellulose (strengthens cell walls)
      3. Making starch (long-term energy storage)
      4. Making amino acids (with nitrate ions)
      5. Making oils and fats (energy resource for seeds)
    • Why is starch a better form of glucose for long-term storage?
      Because it is more compact and insoluble
    • When do plants typically break down stored starch to glucose?
      When photosynthesis isn't happening much, like at night or in winter
    • How do plants make amino acids?
      By combining glucose molecules with nitrate ions from the soil
    • What is the final use of glucose mentioned in the material?
      Making oils and fats for energy storage
    • What factors affect the rate of photosynthesis?
      1. Light intensity
      2. Temperature
      3. Carbon dioxide concentration
      4. Amount of chlorophyll
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