The model shows the active transport of potassium ions (K™) through the cell membrane and into a cell. Where does the energy come from to bring potassium ions into the cell?

a) energy is released through potassium ions

b) the energy is generated by the cell membrane

c) the energy comes from the atp molecule

d) the energy comes from the adp molecule

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.

Why are carbon dioxide concentrations expected to increase? a carbon dioxide concentrations are expected to increase, because fossil fuel burning is expected to increase b. carbon dioxide concentrations are expected to increase, because of an increase in agriculture. c.carbon dioxide concentrations are expected to increase, because more land will have to be cleared for increasing populations and agricultural use. d. all of the above select the best answer from the choices provided mark this and return save and exit next submit submit