Cellular respiration is one of the most elegant, majestic, and fascinating metabolic pathways on earth. At the same time, it’s also one of the most complicated. When I learned about it for the first time, I felt like I had tripped and fallen into a can of organic-chemistry-flavored alphabet soup!
Luckily, cellular respiration is not so scary once you get to know it. Let's start by looking at cellular respiration at a high level, walking through the four major stages and tracing how they connect up to one another.
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Answer:
Cellular respiration is one of the most elegant, majestic, and fascinating metabolic pathways on earth. At the same time, it’s also one of the most complicated. When I learned about it for the first time, I felt like I had tripped and fallen into a can of organic-chemistry-flavored alphabet soup!
Luckily, cellular respiration is not so scary once you get to know it. Let's start by looking at cellular respiration at a high level, walking through the four major stages and tracing how they connect up to one another.
Verified answer
This is what's in my notes (this is just a summary tho, but you can watch an easier explanation on yt)...
1.) Glycolysis - Breaking up glucose/splitting glucose
into 2, generating ATPs (and NADH
that will be used for electron
transport chain). Yields 2 net
ATPs, 2 NADH, and 2 Pyruvates.
- Breaks carbon backbone of glucose
into 2. Each of these 3-carbon
backbone molecules are called
pyruvate.
- Occurs in cytoplasm outside
mitochondria.
- Anaerobic
*Preperatory Reaction is where the pyruvates of
glycolysis move into the mitochondria where they
are converted into Acetyl CoA. More NADH is
produced during the process and carbon dioxide is
released.
2.) Krebs Cycle (Citric Acid Cycle) - Where
remaining carbons from initial
glucose are oxidized, releasing
C0₂.
- NADPH, FADH2, and 2 ATP
molecules are produced.
- Aerobic
3.) Electron Transport Chain (ETC) - Where most
ATPs are produced (34 ATPs).
- NADH and FADH2 give up
electrons to the chain.