lysosome

Examples of lysosome in the following topics:

• Lysosomes

  • The vesicle fuses with a lysosome.
  • Usually, lysosomes are between 0.1 to 1.2μm, but the size varies based on the cell type.
  • Lysosomes are found in nearly every animal-like eukaryotic cell.
  • On the other hand, lysosomes are not commonly-found in plant cells.
  • Lysosomes are not needed in plant cells because they have cell walls that are tough enough to keep the large/foreign substances that lysosomes would usually digest out of the cell.

• Proteolytic Degradation

  • In addition to proteasomal complexes, the organelle, the lysosomes are also used to ensure protein degradation.
  • The intracellular process that utilizes lysosomes involves autophagy.
  • The lysosomal pathway, in comparison to the proteasomal pathway, is typically non-selective.
  • The lysosome contains proteases that are able to target and degrade proteins.

• Vesicles and Vacuoles

  • Animal cells have a set of organelles not found in plant cells: lysosomes.
  • Lysosomes are a cell’s “garbage disposal.”
  • Enzymes within the lysosomes aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and worn-out organelles.
  • Therefore, the pH within lysosomes is more acidic than the pH of the cytoplasm.

• Comparing Plant and Animal Cells

  • Animal cells each have a centrosome and lysosomes, whereas plant cells do not.
  • Animal cells have another set of organelles not found in plant cells: lysosomes.
  • The lysosomes are the cell's "garbage disposal."
  • Enzymes within the lysosomes aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and even worn-out organelles.
  • Therefore, the pH within lysosomes is more acidic than the pH of the cytoplasm.

• Cell Structure, Metabolism, and Motility

  • The vesicle containing the ingested particle, the phagosome, then fuses with a lysosome containing hydrolytic enzymes to produce a phagolysosome, which breaks down the food particle into small molecules that diffuse into the cytoplasm for use in cellular metabolism.
  • The stages of phagocytosis include the engulfment of a food particle, the digestion of the particle using enzymes contained within a lysosome, and the expulsion of undigested materials from the cell.

• Characteristics of Eukaryotic Cells

  • Animal cells have a centrosome and lysosomes, whereas plant cells do not.
  • The centrosome is a microtubule-organizing center found near the nuclei of animal cells while lysosomes take care of the cell's digestive process.
  • Despite their fundamental similarities, there are some striking differences between animal and plant cells.Animal cells have centrioles, centrosomes, and lysosomes, whereas plant cells do not.

• Sea Coral and Sea Anemone Zooxanthellae

  • This membrane probably undergoes some modification to its protein content, which functions to limit or prevent phago-lysosome fusion.

• Peroxisomes

  • In contrast to the digestive enzymes found in lysosomes, the enzymes within peroxisomes serve to transfer hydrogen atoms from various molecules to oxygen, producing hydrogen peroxide (H2O2).

• Phase-Contrast Microscopy

  • Internal details and organelles of live, unstained organisms (e.g. mitochondria, lysosomes, and the Golgi body) can be seen clearly with this microscope.

• Regulation of Blood Cholesterol Levels

  • The vesicle then fuses with a lysosome, which has an enzyme called lysosomal acid lipase that hydrolyzes the cholesterol esters.