<em>If you want to know what Luca is or stands for it stands for last universal common ancestor.</em>
Explanation:
<em>My explanation to this is that it is the most recent population of organisms from which all organisms now living on Earth have a common descent, the most recent common ancestor of all current life on Earth.</em>
The acronym LUCA stands for—Last Universal Common Ancestor. The term is used by astrobiologists and those interested in the evolutionary biology. The geological period of time in which LUCA existed was a point of demarcation from primitive life forms to more-advanced earth-living entities.
Lysosomes, because they are the organelles that secrete these hydrolytic enzymes and help break down old organelles, viral/bacterial invaders, and food particles.
