Photosynthesis and cellular respiration

Photo-what?
Good Morning Mr. Sun! Thanks for showing up and giving all us autotrophs the energy we need to kickstart photosynthesis.
Photosynthesis! Plants like me , and even big trees like that guy over there, use energy from you to convert water and CO2 into sugar and oxygen.
Through a process called anaerobic cellular respiration in the chloroplast, we convert the reactants of CO2 and water into the products of sugar and oxygen.
Tell me how it works?
We use the sugar to make our own food so we can grow big and strong. We also release oxygen back into the air through our leaves.
Well, the pigment in our leaves called chlorophyll, captures the sun's energy and stores it in our chloroplasts.
That's right! We need the CO2 produced by heterotrophs as a part of their cellular respiration and they need the oxygen we produce. We're interdependent for survival.
So you help clean the air and make oxygen for heterotrophs?
Do heterotrophs use anaerobic respiration too?
No, but they DO use aerobic respiration. Theirs takes place in the mitochondria and instead of capturing energy, they release it.
So heterotrophs like humans, dogs, birds, fungi and even some bacteria use reactants sugar and O2 for cellular respiration and produce the CO2 you need?
That's right, that's why they say all living things respire. Haha!

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