Which shows that water is entering cells?

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

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

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?