Lysosomes
How Lysosomes work(and explain about lysosomes)
Lysosomes are special vesicles that provide an isolated environment for potentially dangerous chemical reactions. these vesicles, produced at the Golgi apparatus, contain digestive enzymes. Lysosomes are small, often spherical bodies with contents that look dense and dark in electron micrographs
Lysosomes have several function
Lysosomes have several function
- primary lysosomes contain inactive enzymes. when these lysosomes fuse with the membranes of damaged organelles the enzymes are activated and secondary lysosomes are formed.these enzymes then break down the lysosomal contents. the cytosol reabsorbs released nutrients, and the remaining material is eliminated from the cell by exocytosis.
- lysosomes also function in the destruction of bacteria that enter the cell from the extracellular fluid. the cell encloses these substances in a small portion of the cell membrane. which is then pinched off to form a transport vesicle in the cytoplasm.(this method of transporting substances into the cell. called endocytosis)
- Lysosomes also perform essential cleanup and recycling fuctions inside the cell. For example, when muscle cells are inactive, lysosomes gradually break down their contractile proteins. the process is usually precisely controlled, but in a damaged or dead cell the regulatory mechanism fails. lysosomes then distintegrate, releasing enzymes that become activated within the cytosol. these enzymes rapidly desytoy the cell's proteins and organelles in a procees called autolysis.
why Lysosomes are important?
- It is responsible for the cell's digestion of macromolecules, old cell parts, and microorganisms. Lysosomes are organelles that containdigestive enzymes. They digest excess or worn-out organelles, food particles, and engulfed viruses or bacteria. The membrane surrounding a lysosome allows the digestive enzymes to work at the 4.5 pH they require. Lysosomes fuse with vacuoles and dispense their enzymes into the vacuoles, digesting their contents