The sodium-potassium pump functions to pump
a) sodium and potassium ions out of the cell.
b) 2 na+ and 2 k+into the cell.
c) sodium ions out of the cell and potassium ions into the cell.
d) sodium and potassium ions in both directions across the cell memb

C ) Sodium ions out of the cell and potassium ions into the cell.

Explanation:

Sodium and potassium ions moves against concentration gradient.

Three sodium ions are exported and two potassium ions are imported, for every ATP that pump uses.

The sodium - potassium pumps help to maintain resting potential.

It also help to regulate the cellular volume

It also effects the transport.

It was discovered by Danish scientist Jens Christian in 1957.

He was awarded by Noble prize in 1997.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.