A vestigial organ, something that has yet to fall prey to evolution, but no longer serves a purpose, or the purpose it used to serve.
I believe the corre term to fill in the blank is "a protein gradient." Chemiosmosis uses a protein gradient to supply the energy necessary to phosphorylate adp to atp. It<span> is the diffusion of hydrogen ions (protons) across the biological membrane via the ATP synthase.</span>
Answer:
A growth light is an artificial light source designed to stimulate plant growth by emitting a light appropriate for photosynthesis.
It is used when there is no natural light available or supplemental light is needed.
Chlorophyll is a pigment found in the chloroplasts of of plant cells and is responsible in making most plants appear green. These green plants contain chlorophyll and chlorophyll absorbs the red and blue wavelength in the light spectrum. They do not absorb green that's why it is reflected, and the plant looks green.