Which bests describes a pilus

An easy way to calculate the amount of energy available at each level is to what?

Nerve cells are specialized to respond to stimulitrue or false?

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