Well I’ve decided to check out some Krebs cycle videos to see who could explain it the simplest and I’ve found this video done by “brightstorm2” unfortunately the guy who does these videos never introduces himself before beginning, so I never got his name 😦 Thats my first criticism to his video. Well before I begin here is the link for the video:
I never liked learning about the Krebs cycle because it’s normally boring and confusing if you don’t understand the reactions taking place.
What I love about his videos is that he is teaching using a television to show diagrams, pictures and videos to help us see what is happening. What I like about the diagrams he uses is that its really simple an easy to just watch and understand exactly what is happening. He explains the work well and he simplifies the reactions in a way that it is easy to remember. Another thing I like about his videos is that it is short and to the point. So if you need to quickly review the Krebs cycle you can do so in under 6minutes 🙂 He communicates well with his viewers and keeps them engaged and thinking. His speech was clear and well understandable. I enjoyed his video and he was not boring at all. I normally get bored and lost for this topic 😦
A summary of the video
a) Krebs cycle ccurs in matrix of mitochondria.
b) Only occurs if O2 present.
c) Link Reaction: Pyruvate moves into matrix & loses 1 carbon as 1 CO2. 1 more NADH is made.
d) The remaining 2C molecule enters the Krebs Cycle.
In several steps,
e) energy & hydrogens are removed from the 2 carbons and changed to more NADH & FADH2. These migrate to Electron Transport.
f) 1 more ATP is made. The cell can use this.
g) each remaining carbon is removed as CO2 & released to air.
What occurs in one turn of the Krebs cycle:
1. 2 Carbon molecule enters the cycle & joins a 4C molecule. 2. In a series of steps, the remaining H and high energy electrons are removed from the 2 C. 3. Three NAD+ are converted into 3 NADH & 3H+. 4. One FAD is converted into 1 FADH2. 5. One ATP is made. 6. Two CO2 are released. 7. At the end of the cycle, nothing remains of the original glucose molecule.