What term is defined as the aptitude of some individuals to be better suited for survival and reproduction?

Evolution by natural selection.

Explanation:

According to Charles Darwin's theory of evolution by natural selection, some organisms possesses heritable traits that enable them to adapt to their environment compared with other members of their species. This will be more likely to survive, reproduce, and pass more of their genes on to the next generation.

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !