Hi! I'm a bit confused with this question in my Biology Honors course, and would really like to understand more about this for my test coming up! Any help is appreciated. Which 3 kingdoms have species that can make us sick?

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers