Glad you asked, Chubby! Let us talk about the word respiration first. Look at the description box below.
ATP ENERGY
So technically, respiration means breathing. You could have just said that.
It is better to explain it in the best way. Let us talk about ATP energy now. Look!
Cool! What now?
Well, there are 2 stages for cellular respiration.
ATP energy
The word respiration means the process in which cells obtain energy from glucose by breaking down simple food molecules. Such as sugar and releasing the stored energy. Respiration means breathing.
So your saying sugar is broken down into molecules and releases a tiny amount of energy?
Exactly! Now this is stage 2.
ATP energy is stored in the glucose. ATP is chemical energy the cell can use. It is the molecules for your cells to work. ATP is the energy being released.
So the second stage leases a BIG amount of energy and molecules are broken down even more?
What about the equation?
Right!
Stage 1: In the cytoplasm, glucose is broken down into smaller molecules; oxygen is NOT involved and only a small amount of energy is released.
Ok. So is cellular respiration in humans?
So the equation is like the photosynthesis equation?
No! It it is close, but not the same.
Stage 2: Takes place in the mitochondria, there, molecules are broken down even further by chemical reactions. These chemical reactions require oxygen and release a great deal of ENERGY C02 and H20 are also reused- in most animals, these 2 products leave the body by exhaling.
The equation for cellular respiration is C6H1206 + 602 =6 CO2 + 6H20+ energy. C6H1206 is sugar and it comes from food we eat. 602 is oxygen and comes from air or water during respiration.
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