The proper answer to this question is "vacuoles are used to clean the cell for example a child cleaning his or her room they would put his or her toys into a closest and that was a vacuole does it cleans up things in a cell and keeps them stored into there like a closest".
Nucleoside analogs are the mutagenic chemicals that have a structure that is similar to the normal bases of the nucleotide and thus can be incorporated in the DNA during the process of replication, however as it has different base-pairing rules than the normal nucleotide base it can lead to mutations.
An example of a nucleoside analog is acyclovir which an analog of guanosine.
