You are presented with the quiz "The opposite of when cells convert oxygen and carbs into carbon dioxide, water, and energy is what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy" and "chemically, cellular respiration is the exact opposite of photosynthesis". 

So, what's the best answer to the question?


 

   photosynthesis        