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Practice: Photophosphorylation 2 definitions

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  • Einstein
    A unit representing a mole of photons, used to quantify light absorption in molecular systems.
  • Photon
    A fundamental particle of light, whose collective energy drives photosynthetic and photochemical reactions.
  • Cytochrome
    A pigment molecule displaying characteristic absorbance bands, crucial in electron transport and light reactions.
  • Soray band
    A distinct absorbance feature around 400 nm, commonly observed in various photo pigments and cytochromes.
  • Absorbance spectrum
    A graphical representation showing which wavelengths are absorbed by a molecule or organism.
  • Action spectrum
    A plot correlating photosynthetic activity with specific wavelengths, revealing efficiency across the spectrum.
  • Alpha band
    A unique absorbance signature, serving as a molecular fingerprint for specific pigments or proteins.
  • Blue light
    A segment of the visible spectrum, often associated with high-energy photons and significant photosynthetic impact.
  • Photoautotroph
    An organism capable of using light energy to drive biosynthetic processes, central to photosynthesis.
  • Pigment
    A molecule absorbing specific wavelengths, playing a key role in capturing light for photosynthetic reactions.
  • Photosystem
    A complex of proteins and pigments facilitating light absorption and energy conversion in photosynthesis.
  • Light reaction
    The phase of photosynthesis where absorbed photon energy is converted into chemical energy.
  • Absorption
    The process by which molecules take in photons, initiating photochemical or photosynthetic events.
  • Photosynthetic efficiency
    A measure of how effectively absorbed light is converted into biochemical energy during photosynthesis.
  • Wavelength
    A property of light determining its color and energy, crucial for understanding absorbance and action spectra.