Cellular Respiration
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- čas přidán 5. 08. 2024
- This biology video tutorial provides a basic introduction into cellular respiration. It covers the 4 principal stages of cellular respiration such as glycolysis, pyruvate oxidation, the kreb’s cycle, and the electron transport chain. It also covers anaerobic cellular respiration such as lactic acid fermentation and ethanol fermentation. This video contains plenty of examples and practice problems.
Here is a list of topics:
0:00 - Intro to Cellular Respiration
1:10 - Intro to ATP - Adenosine Triphosphate
5:25 - The 4 Stages of Cellular Respiration
7:34 - Glycolysis
8:26 - Substrate Level Phosphorylation
9:36 - Oxidation and Reduction Reactions
12:03 - Investment and Payoff Phase of Glycolysis
13:08 - Enzymes - Kinase and Isomerase
16:44 - Pyruvate Oxidation into Acetyl-CoA
18:22 - Pyruvate Dehydrogenase Enzyme
19:53 - The Kreb’s Cycle
26:50 - The Mitochondrial Matrix and Intermembrane Space
27:45 - The Electron Transport Chain
28:32 - Ubiquinone and Cytochrome C - Mobile Electron Carriers
34:14 - ATP Synthase and Chemiosmosis
35:32 - Oxidative Phosphorylation
48:00 - Aerobic and Anaerobic Respiration
49:40 - Lactic Acid Fermentation
52:45 - Ethanol Fermentation
55:26 - Examples and Practice Problems
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sir on question 20 you gave the wrong answer for B :( investment phase is -2 ATP molecules...............
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1:33:24 i think that in the investment phase ,we give 2 Atp molecules per glucose molecule in order glycolysis to start...in the pay off phase is that are yield 4 atp molecules and net production is 2atp... so I think that B) is false
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1:27:07 glycolysis produces water when the enzyme enolase catalysts the reaction of glycerate 2 phosphate into P-enolpyruvate. It produces 2 waters.
Did the same mistake on my test.
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I am confused about question 20 B, I thought the "payoff" phase was the last set of reactions that produce 4 ATP and the investment phase was the first set of reactions that yielded 2ATP molecules? Can someone explain further please??
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as someone with fibro and m.e, I have joked that I dont make atp, it is now known that is actually the case. And it all kinda makes sense now, I'm severely anemic, lack the vitamins that tend to help in the process of atp, and constantly crave carbs and sugar. I hope sometime soon we learn more about the correlation. Thanks so much for the vid.
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at 1:33:05 B is false
the investment phase consists of the first 5 stages, NOT the last 5
correct me if I am wrong
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I was confused with how glucose is broken down to ATP because some people just say glucose is just broken down into 2 ATP which confused me. Anyway I get it how it is through your video.
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I have a question. During the pyruvate phase, when O=C=O is broken off pyruvate and becomes CO2, why is that considered pyruvate oxidation if pyruvate is losing oxygen?
I think the main reaction is pyruvate dehydrogenase, but pyruvate oxidation is a reaction under it
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Hi! How many ATP molecules produces from the breakdown of one molecule of pyruvate to carbon dioxide and water (the enire proton gradient of mitochondrial inner membran includes too for ATP production and ATP-synthase has 6 c-subunits).
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Letter B in Item 20 for the Practice Problems is false, it is supposed to be in the pay-off phase wherein 4 ATP molecules are generated.