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Plant Vacuole definitions

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  • Plant Vacuole
    Large, membrane-enclosed organelle in plant cells, crucial for water storage, degradation, pH regulation, and maintaining cell structure.
  • Turgor Pressure
    Internal force exerted by stored water in the vacuole, essential for keeping plant cells firm and structurally intact.
  • Tonoplast
    Specialized membrane that surrounds the vacuole, controlling movement of substances in and out of the organelle.
  • Acidification
    Process by which the vacuole maintains a low internal pH, enabling degradation functions similar to lysosomes.
  • ATP Pump
    Protein complex in the vacuole membrane that transports protons, regulating cytosolic pH and vacuole acidity.
  • Provacuole
    Immature precursor organelle that fuses from vesicles and matures into a functional plant vacuole.
  • Endosome
    Membrane-bound compartment similar to the provacuole, involved in the maturation pathway of the plant vacuole.
  • Lysosome
    Organelle in animal cells with degradative functions, functionally analogous to the plant vacuole's breakdown role.
  • Cytosolic pH
    Level of acidity or alkalinity in the cell's cytosol, regulated by proton transport from the vacuole.
  • Nutrient Storage
    Function of the vacuole involving accumulation of essential molecules and solutes for cellular metabolism.
  • Vesicle
    Small, membrane-bound structure that transports processed components from the Golgi to form the provacuole.
  • Golgi
    Organelle where vacuole components are processed before being packaged into vesicles for delivery.
  • Endoplasmic Reticulum
    Site of synthesis for proteins and components destined for the vacuole, initiating the organelle's formation.
  • Solute
    Dissolved substance stored within the vacuole, contributing to cellular osmotic balance and metabolism.