These organelles are formed through the fusion of transport vesicles with late endosomes. I-cell disease occurs when certain proteins are unable to reach this organelle due to not being tagged properly in the Golgi body. Sphingo-lipidoses are examples of "storage diseases" named for this organelle, involving an accumulation of excess products in the cell. Proteins tagged with mannose-6-phosphate are destined for these hydrolase-rich organelles, whose pH is around 4.5. For 10 points, name these organelles that degrade and recycle cellular waste.
a. Mitochondria
b. Lysosomes
c. Endoplasmic Reticulum
d. Golgi Apparatus