What do you mean by that? It does or it does not?
Isotonic contractions generate force by changing the length of the muscle and can be concentric contractions or eccentric contractions. A concentric contraction causes muscles to shorten, thereby generating force. Eccentric contractions cause muscles to elongate in response to a greater opposing force.
Just google a list of common household bases and acids. Like lime is a common base and the wiki page will have it's name, purpose and active ingredient right there
