Biology Chapter 8: Photosynthesis Vocabulary
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Biology Chapter 8: Photosynthesis Vocabulary

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Questions and Answers

What is adenosine triphosphate (ATP)?

  • Type of pigment in plants
  • Compound used by cells to store and release energy (correct)
  • Protein that helps in photosynthesis
  • Process of converting sunlight into energy
  • What is the role of ATP synthase?

    A cluster of proteins that span the cell membrane and allow hydrogen ions (H+) to pass through it.

    Define an autotroph.

    An organism that is able to capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds.

    What is another name for the Calvin cycle?

    <p>Light-independent reactions.</p> Signup and view all the answers

    What is chlorophyll?

    <p>The principal pigment of plants and other photosynthetic organisms.</p> Signup and view all the answers

    What is the electron transport chain?

    <p>A series of electron carrier proteins that shuttle high-energy electrons during ATP-generating reactions.</p> Signup and view all the answers

    Define a heterotroph.

    <p>An organism that obtains food by consuming other living things.</p> Signup and view all the answers

    What do light-dependent reactions produce?

    <p>Oxygen and energy carriers ATP and NADPH.</p> Signup and view all the answers

    What are light-independent reactions also called?

    <p>The Calvin cycle.</p> Signup and view all the answers

    What is NADP+?

    <p>A carrier molecule that transfers high-energy electrons from chlorophyll to other molecules.</p> Signup and view all the answers

    What is a pigment?

    <p>A light-absorbing molecule used by plants to gather the sun's energy.</p> Signup and view all the answers

    What is photosynthesis?

    <p>The process used by plants and other autotrophs to capture light energy and use it to convert carbon dioxide and water into oxygen and energy-rich carbohydrates.</p> Signup and view all the answers

    What is a photosystem?

    <p>A cluster of chlorophyll and proteins found in thylakoids.</p> Signup and view all the answers

    Define stroma.

    <p>The fluid portion of the chloroplast, located outside of the thylakoids.</p> Signup and view all the answers

    What are thylakoids?

    <p>Sac-like photosynthetic membranes found in chloroplasts.</p> Signup and view all the answers

    Study Notes

    Photosynthesis Vocabulary

    • Adenosine triphosphate (ATP)

      • Energy-storing compound used by cells for various functions
    • ATP synthase

      • Protein complex that facilitates the passage of hydrogen ions (H+) through the cell membrane, critical for ATP production
    • Autotroph

      • Organisms that produce their own food from sunlight or chemicals, classified as producers within ecological systems
    • Calvin cycle

      • Refers to light-independent reactions where carbohydrates are synthesized from atmospheric carbon dioxide
    • Chlorophyll

      • The primary pigment in plants and photosynthetic organisms, essential for capturing light energy
    • Electron transport chain

      • A sequence of proteins involved in transferring high-energy electrons, essential for ATP synthesis during cellular respiration
    • Heterotroph

      • Organisms that acquire energy by consuming other organisms, known as consumers in food webs
    • Light-dependent reactions

      • Reactions that capture sunlight to produce oxygen, converting ADP and NADP+ into energy carriers ATP and NADPH
    • Light-independent reactions

      • Reactions that do not utilize light directly; they utilize ATP and NADPH to form glucose and other high-energy compounds
    • NADP+

      • A carrier molecule that transports high-energy electrons from chlorophyll to various biochemical pathways
    • Pigment

      • Molecules that absorb light, enabling plants to capture solar energy for photosynthesis
    • Photosynthesis

      • Process by which autotrophs like plants convert light energy into chemical energy, transforming carbon dioxide and water into oxygen and carbohydrates
    • Photosystem

      • Complex of chlorophyll and proteins found in thylakoids, crucial for the initial stages of light-dependent reactions
    • Stroma

      • The fluid matrix surrounding thylakoids in chloroplasts, site of light-independent reactions
    • Thylakoid

      • Membrane structures within chloroplasts that house the machinery for photosynthesis, specifically light-dependent reactions

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    Test your knowledge with this flashcard quiz on the key vocabulary of Chapter 8: Photosynthesis. Each term is crucial for understanding how organisms produce energy. Whether you're studying for a test or just brushing up, these flashcards cover essential concepts.

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