How does temperature affect electrical resistance?

a. as temperature increases, electrical resistance decreases.

b. temperature and electrical resistance are unrelated.

c. as temperature increases to approximately water’s boiling point, electrical resistance decreases. beyond this, it increases.

d. as temperature falls, electrical resistance decreases.

Temperature affects metal in numerous ways. A higher temperature increases the electrical resistance of a metal, and a lower temperature reduces it. Heated metal undergoes thermal expansion and increases in volume. so the answer is C

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the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.