Whenever there is a change of state, such as a solid to liquid or liquid to gas, heat energy can be added without a temperature change because
a) the added energy is not needed.
b) the energy is lost to the system.
c) the change of state requires energy.
d) the energy is lost to the atmosphere.

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

(04.05 hc) analyze the given diagram of the carbon cycle below. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.

Which number should be placed before f2 on the reactants side equation to make equation balanced? xe + > xef4