Question

Chemical energy input converted from the sun occurs via ____ in plants or ingesting food in animals; this energy drives the flow of matter into and out of the cell. The chemical energy is inefficiently converted into usable energy by _____, because all the stored energy is not converted into ATP some of it is released into the ecosystem as _____.

Answer 1

Chemical energy input converted from the sun occurs via **photosynthesis** in plants or ingesting food in animals; this energy drives the flow of matter into and out of the cell. The chemical energy is inefficiently converted into usable energy by **cellular respiration**, because all the stored energy is not converted into ATP; some of it is released into the ecosystem as **heat**.