Where do plants get the energy for photosynthesis
to take place?

The sun.

Explanation:

During the process of photosynthesis, cells use carbon dioxide and energy from the sun to make sugar molecules and oxygen.  I hope this helped!!!

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.