Question 12
The diagram illustrates the use of energy by a nerve cell to expel a sodium ion from inside of the cell.
Outside of Cell
Cell
Membrane
Transport
Protein
H
WW
soon
Energy
Inside of Cell
Which BEST explains why energy is necessary to complete this function?

The ion is being transported against a concentration gradient.

Explanation: this is why energy is necessary

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a