4.6 Other Vesicles and Vacuoles
Function of large central vacuole in plant
Gives support to the cell; maintains turgor pressure in cell; stores nutrients and waste products
Difference between vesicles and vacuoles
Vesicles: pinched off membrane that transport materials between organelles Vacuoles: larger and store excess substances
Important function of peroxisomes
active in lipid metabolism
Hydrogen Peroxide
created as the result of actions performed by enzymes in peroxisomes
Many small vacuoles
found only in animal cell
One large central vacuole
found only in plant cell
Peroxisomes
membrane bound vesicles that enclose enzymes; enzymes synthesized by free ribosomes in cytoplasm
Vacuoles
membrane sacs that are larger than vesicles; stores excess substances
Turgor pressure
pushes the plasma membrane against the cell wall of plant; provides structural support
Function of vacuole
storage of nutrients and waste products, provides supports, and reservoir for water