C1 - Photosynthesis and Cellular Respiration
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Questions and Answers

Which organelles are unique to plant cells and absent in animal cells?

  • Ribosomes
  • Nucleus
  • Mitochondria
  • Vacuoles (correct)
  • What is the primary function of chloroplasts?

  • Photosynthesis (correct)
  • Cellular respiration
  • Storage of nutrients
  • Protein synthesis
  • What happens to chlorophyll in plants during the cooler months?

  • It increases in concentration
  • It turns blue
  • It remains stable
  • It begins to disassemble and break down (correct)
  • Which part of the chloroplast contains the thylakoids?

    <p>Stroma</p> Signup and view all the answers

    What is the main energy-carrying molecule produced by mitochondria?

    <p>ATP</p> Signup and view all the answers

    What is the primary function of chloroplasts in plants?

    <p>Convert solar energy into glucose</p> Signup and view all the answers

    Which pathway is characterized as catabolic?

    <p>Cellular respiration</p> Signup and view all the answers

    What type of energy do anabolic pathways generally require?

    <p>Chemical energy</p> Signup and view all the answers

    Which of these statements about mitochondria is true?

    <p>They generate ATP during cellular respiration.</p> Signup and view all the answers

    What do enzymes do in metabolic pathways?

    <p>Reduce the startup energy needed for reactions</p> Signup and view all the answers

    Which type of cellular process do plants primarily perform to create energy-rich carbohydrates?

    <p>Photosynthesis</p> Signup and view all the answers

    Animals and plants use glucose mainly for which purpose?

    <p>To generate ATP</p> Signup and view all the answers

    Which of the following processes is performed only by plants?

    <p>Photosynthesis</p> Signup and view all the answers

    Study Notes

    Photosynthesis and Cellular Respiration

    • Photosynthesis traps solar energy and transforms it into glucose, a carbohydrate.
    • Photosynthesis occurs in chloroplasts.
    • Photosynthesis is an anabolic pathway.
    • Cellular respiration breaks down high-energy compounds (like glucose) to produce ATP.
    • ATP is a direct source of energy for life.
    • Cellular respiration occurs in mitochondria.
    • Cellular respiration is a catabolic pathway.

    Light

    • Visible light is a type of electromagnetic radiation.
    • Photons are packets of light.
    • Solar energy is the ultimate energy source for living things.
    • Special pigments in plants capture energy from photons to start photosynthesis.

    Chloroplasts

    • Chloroplasts are membrane-bound organelles found in plants and algae.
    • They carry out photosynthesis.
    • Thylakoids are flattened sacs inside chloroplasts, arranged in stacks called grana.
    • The stroma is the inner solution within chloroplasts.

    Chlorophyll

    • Chlorophyll gives leaves their green color.
    • Chlorophyll molecules trap solar energy.
    • Leaves are the primary photosynthetic organs of most plants.

    Mitochondria

    • Mitochondria are the site of cellular respiration in cells.
    • They are called the "powerhouses" of the cell because they produce ATP, the main energy-carrying molecule.
    • Mitochondria are scattered throughout the cytoplasm of cells.
    • Mitochondria have an inner and outer membrane.
    • The inner membrane has folds called cristae that increase surface area for ATP production.

    Animal vs. Plant Cells

    • Vacuoles, chloroplasts, and cell walls are three key organelles found in plant cells but absent in animal cells.
    • Vacuoles store water.
    • Chloroplasts perform photosynthesis.
    • Cell walls provide support to plant cells.

    Metabolic Pathways

    • Anabolic pathways require energy to build large molecules.
    • Photosynthesis is an example of an anabolic pathway.
    • Catabolic pathways release energy by breaking down molecules.
    • Cellular respiration is an example of a catabolic pathway.

    Enzymes

    • Enzymes are biological catalysts that speed up reactions by lowering the activation energy.
    • Enzymes are crucial for metabolic pathways to function at the temperatures of living systems.

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    Description

    Test your knowledge on the processes of photosynthesis and cellular respiration. This quiz covers key concepts such as the roles of chloroplasts, mitochondria, and pigments in these essential biological pathways. Prepare to explore the transformation of solar energy into glucose and the breakdown of energy in cells!

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