Up to 25% of a cell's atp is used to run sodium-potassium pumps. without the resulting sodium and potassium gradients, neurons and muscles cannot fire properly. the sodium-potassium pump catalyzes:

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.

What best describes the structure of the declaration of independence?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?