Photosynthesis Flashcards
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Questions and Answers

What is Chlorophyll?

  • A type of sugar
  • Green pigment in plants that absorbs light energy used to carry out photosynthesis (correct)
  • A measure of wavelength
  • A gas necessary for breathing
  • What is Glucose?

    A simple sugar that is an important source of energy.

    What is a limiting factor?

    An environmental factor that prevents a population from increasing.

    What is a Nanometer?

    <p>One billionth of a meter.</p> Signup and view all the answers

    What is Photosynthesis?

    <p>Conversion of light energy from the sun into chemical energy.</p> Signup and view all the answers

    What is Wavelength?

    <p>The distance between two corresponding parts of a wave.</p> Signup and view all the answers

    What gas do we need to breathe in?

    <p>Oxygen.</p> Signup and view all the answers

    Where is oxygen produced during photosynthesis?

    <p>Plants.</p> Signup and view all the answers

    What do plants use the energy of sunlight to produce?

    <p>Glucose from Carbon Dioxide.</p> Signup and view all the answers

    How does light intensity affect oxygen production?

    <p>The greater the light intensity, the greater the oxygen production.</p> Signup and view all the answers

    How does temperature affect oxygen production?

    <p>Oxygen production is maximized around 25C.</p> Signup and view all the answers

    How does CO2 level affect oxygen production?

    <p>Increasing CO2 production increases oxygen production.</p> Signup and view all the answers

    How does oxygen production relate to the rate of photosynthesis?

    <p>Greater flow of oxygen corresponds to a higher rate of photosynthesis.</p> Signup and view all the answers

    Why would it be hard to find the ideal light intensity if the temperature were very hot or cold?

    <p>Oxygen production would be near zero no matter what light intensity value you use.</p> Signup and view all the answers

    Why would it be hard to find the ideal CO2 level if the light intensity were very low?

    <p>Oxygen production would be near zero no matter what CO2 level you use.</p> Signup and view all the answers

    What determines the color of a light wave?

    <p>Wavelength.</p> Signup and view all the answers

    How does the color of light affect the rate of photosynthesis?

    <p>The production of oxygen increases at 450 nm (blue), drops, then rises again at 660 nm (orange).</p> Signup and view all the answers

    Which color of light maximizes the rate of photosynthesis?

    <p>Blue.</p> Signup and view all the answers

    How does the reflected green light from a leaf explain the relatively low flow of oxygen?

    <p>When we look at a leaf, the green light is reflected, which corresponds to a low flow of oxygen.</p> Signup and view all the answers

    What is the equation for photosynthesis?

    <p>6CO2 + 6H2O + (energy) → C6H12O6 + 6O2.</p> Signup and view all the answers

    What is the relationship between photosynthesis and respiration?

    <p>The higher the rate of formation of products in respiration, the lower the rate of photosynthesis.</p> Signup and view all the answers

    Where does photosynthesis take place?

    <p>Inside plant cells in small organelles called chloroplasts.</p> Signup and view all the answers

    What are the steps of photosynthesis?

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

    Study Notes

    Key Concepts of Photosynthesis

    • Chlorophyll: A green pigment vital for photosynthesis, absorbs light energy.
    • Glucose: Simple sugar, crucial energy source produced during photosynthesis.
    • Limiting Factor: Environmental elements that can restrict population growth or biological processes like photosynthesis.

    Measurement and Energy

    • Nanometer: Unit of measurement; one billionth of a meter, often used in light wavelength.
    • Wavelength: The distance between consecutive points on a wave, critical in determining light color.

    Photosynthesis Process

    • Photosynthesis: Transformation of light energy from the sun into chemical energy stored as glucose.
    • Oxygen Production: Gas produced as a byproduct of photosynthesis in plants. Essential for human respiration.

    Conditions Affecting Photosynthesis

    • Light Intensity: Higher intensity increases oxygen production until a peak at 37% intensity for optimal results.
    • Temperature: Maximal oxygen production occurs around 25°C; significant deviations reduce output.
    • CO2 Levels: Increased carbon dioxide concentration positively influences oxygen production.

    Interrelations in Photosynthesis

    • Oxygen Flow vs. Photosynthesis Rate: Greater oxygen output signifies a higher rate of photosynthesis.
    • Environmental Challenges: Extreme temperatures or low light conditions hinder the identification of optimal CO2 or light levels.

    Light and Photosynthesis Efficiency

    • Color of Light: Affects photosynthesis efficiency; optimal oxygen production occurs at 450 nm (blue light) and peaks again at 660 nm (orange light).
    • Maximizing Photosynthesis: Blue light is the most effective in promoting photosynthesis.

    Light Reflection and Color Perception

    • Green Light Reflection: Leaves appear green because they reflect green light, which correlates with lower oxygen production rates.

    Chemical Equation

    • Photosynthesis Equation:
      • 6CO2 + 6H2O + (energy) → C6H12O6 + 6O2
      • Carbon dioxide and water, with light energy, yield glucose and oxygen.

    Relationship Between Photosynthesis and Respiration

    • Enhanced product formation in respiration inversely relates to photosynthesis levels.

    Location and Steps of Photosynthesis

    • Chloroplasts: Photosynthesis occurs within these small organelles in plant cells.
    • Photosynthesis Steps: Comprises light reactions and the Calvin cycle, essential for transforming energy.

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    Description

    Test your knowledge of key terms related to photosynthesis with these flashcards. Each card features a word and its definition, covering important concepts like chlorophyll and glucose. Perfect for students looking to enhance their understanding of plant biology.

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