peroxisomes, lysosomes and vacuoles
DESCRIPTION
Peroxisomes, lysosomes and vacuoles. Add to our cell!!!. Lysosomes and vacuoles. Lysosomes are vesicles produced by the Golgi apparatus . Lysosomes contain hydrolytic enzymes and are involved in intracellular digestion . - PowerPoint PPT PresentationTRANSCRIPT
Peroxisomes, lysosomes and vacuoles
Add to our cell!!!
3-2
Lysosomes and vacuoles• Lysosomes are vesicles produced by the Golgi apparatus.
• Lysosomes contain hydrolytic enzymes and are involved in intracellular digestion.
• Digestion within the cell disposes of worn-out cell parts and is necessary for cell rejuvenation.
• Vacuoles (large) and vesicles (small) are membranous sacs in the cell that store substances.
• Vacuoles and vesicles can store a variety of substances for the cell. Anything from water to plant pigments and toxic substances are stored in these membranous sacs.
3-4
Peroxisomes• Peroxisomes are vesicles than contain enzymes to
oxidize organic substances like fats. In other words the use oxygen to break down molecules.
• The enzymes in these organelles produce hydrogen peroxide
• Hydrogen peroxide is broken down right away by the enzyme catalase into oxygen and water.
• Peroxisomes are abundant in the liver where they produce bile salts and cholesterol and break down fats.
Fig. 3.7