2. comparative biochemistry is the study of similarities and differences in among organisms.
a. development
b. homologous structures
c. dna sequences
d. vestigial structures

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 !

i'd say that the moon rock is about 2.2 billion years old.