Which scientist showed that plants use red and blue light in photosynthesis?

Englemann is the scientist who showed that plants use red and blue light in photosynthesis.

-Engelmann devised an experiment to learn which wavelengths (colors) of light were the most effective in carrying out photosynthesis in the green alga Spirogyra.

-He found that certain red and blue wavelengths of light are the most effective in photosynthesis because they have exactly the right amount of energy to energize, or excite, chlorophyll electrons and boost them out of their orbits to a higher energy level.

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.