Photosynthesis-Bioenergetics-Biology

Cards (28)

  • What process must a plant carry out to grow and survive?
    Photosynthesis
  • Where does photosynthesis take place in a plant?
    In the leaves, specifically 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 as a result of photosynthesis?
    Glucose and 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
  • What is the main product that plants want from photosynthesis?
    Glucose
  • How is water transported to the leaves?
    Via the xylem
  • What do plants sometimes use oxygen for?
    For respiration
  • What is one way glucose is used in plants?
    For cellular respiration
  • How can glucose be thought of in terms of energy?
    As a battery
  • What can glucose molecules combine to form?
    Cellulose and starch
  • What is cellulose used for in plants?
    To strengthen cell walls
  • 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 can amino acids be combined to make?
    Proteins
  • What is another use of glucose in plants?
    Making oils and fats
  • Why is glucose essential for plants?
    It affects their growth rate
  • What are the five main uses of glucose in plants?
    1. Cellular respiration
    2. Making cellulose
    3. Making starch
    4. Making amino acids
    5. Making oils and fats
  • What factors affect the rate of photosynthesis?
    Light intensity, temperature, CO<sub>2</sub> concentration, chlorophyll amount
  • What will be explored in the next video?
    Factors affecting the rate of photosynthesis
  • What is the main purpose of photosynthesis?
    To convert light energy into glucose