Question

Lysosomes help to clean up dead organelles and intruders like viruses from a cell. How?

Answer 1

Lysosomes are sucidal bags of cell. They contain a wide variety of hydrolytic enzymes (acid hydrolases) that break down macromolecules such as nucleic acids, proteins, and polysaccharides.
When some organelles of the cell damages, it bursts and digests the whole cell.
Lysosomes were discovered by the Belgian cytologist Christian René de Duve in the 1950s. (De Duve was awarded a share of the 1974 Nobel Prize for Physiology or Medicine for his discovery of lysosomes and other organelles known as peroxisomes.)
Besides degradation of polymers, the lysosome is involved in various cell processes, including secretion, plasma membrane repair, cell signaling, and energy metabolism.