1. Helena Cuellar and Andre Parrilla
Lysosomes
Helena Cuellar and Andre Parrilla

2. Lysosomes = Animal cells

3. Structure Sac/Vesicle single membrane, a phospholipid bilayer
spherical shape
contains many enzyme molecules
3D shape protects vulnerable bonds from enzymatic attacks

4. So...where do they come from? ¯\_(ツ)_/¯
This guy
Golgi Apparatus
(but you already knew that..I hope)

5. Functions Use enzymes to breakdown macromolecules
About 50 different enzymes
Hydrolytic enzymes- use water to break down substrates
have an acidic interior pH level of about 5
Fuse with old organelles and digest them to destroy and recycle
Plasma membrane repair
Destroy any foreign material like bacteria or viruses
When a cell gets damaged, lysosomes burst and the enzymes eat up their own cells
If a lysosome breaks open or leaks its contents, the released enzymes are not very active because the cytosol has a near-neutral pH. However, excessive leak- age from a large number of lysosomes can destroy a cell by self-digestion.

6. Some cells use lysosomes to digest food particles to survive like this Amoeba...

7. Why are lysosomes important?
Allows a cell to renew itself
A human liver cell, for example, recycles half of its macromolecules each week.
Without it, there would be a build of macromolecules.
For example, in Tay-Sachs disease, a lipid-digesting enzyme is missing or inactive, and the brain becomes impaired by an accumulation of lipids in the cells