I'm pretty sure you got them all right. The last one just sounds sort of specific though as Stars are made of Plasma but they don't have heat from the atmosphere. But if you're speaking of only here on Earth then it's correct.
Answer: The sodium-potassium pump system moves sodium and potassium ions against large concentration gradients. It moves two potassium ions into the cell where potassium levels are high, and pumps three sodium ions out of the cell and into the extracellular fluid.
Explanation:
The following that is a characteristic that could be applied to both living and nonliving things can contain mostly carbon, hydrogen, oxygen, and nitrogen.