Some induced mutations exposures I thought of were exposure to being in the sun too long, cigarette smoke, and some x-rays, like dental, medical, or screening at airport securities.

This reminds me of past topics we have discussed in class like using the hydrolysis of ATP as being an exergonic reaction that can be used to transport ions against the gradient and molecular motors being able to take "steps" on the microtubules. The coupling of reactions is a powerful tool to make things go energetically. I like to think about it like the exergonic reaction energetically "pays" for the reaction that's endergonic.