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?

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

What in scientific term why the salty popcorn causes this thirst