Energy in Living Things Do Now: Group the 8 different organisms shown into categories. You may use as many different categories as you like, but should have a reason for placing each member where you do.

Autotrophs vs. Heterotrophs Autotrophs are organisms (like plants) that make their own food (“-troph” means “eater”, autotroph means “self-eater”) Heterotrophs get energy by ingesting other organisms (i.e animals) (“-hetero” = “different”) Try to decide which of the 8 are autotrophs!

Most Autotrophs do Photosynthesis

Heterotrophs take in chemical energy, not light energy.

Photosynthesis as a Process

Cellular Respiration Heterotrophs can’t make their own food, like autotrophs can. The process of cellular respiration is how organisms get the energy they need from the food they take in.

Cellular Respiration How heterotrophs get energy out of the organic chemicals they eat

The Carbon Cycle of Life C6H12O6 Photo-synthesis Respiration ATP Energy Produced CO2 Light Energy

Check your Notes The following terms should appear somewhere in your notes for today: Autotroph Heterotroph Photosynthesis Light reactions, Calvin Cycle Cellular Respiration Glycolysis, fermentation, and aerobic respiration