ATP: Adenosine triphosphate | Energy and enzymes | Biology | Khan Academy

Learn more about ATP: how it stores energy, and how that energy is released when it's converted to ATP and phosphate.

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[lebzelle]

I've watched like 5 videos about ATP and have read a lot of articles about it. Thankfully i found this.

[MichaelQing]

Here is the core biology course for ATP overview:

6 O2 + C 6 H 12 O 6 -> 6 CO2 + 6 H2O + ATP
oxygen + glucose -> carbon dioxide + water + energy

Cellular respiration is the process that releases energy by breaking down food molecules in the presence of oxygen. Glycolysis takes place in the cytoplasm. The Kreb cycle and electron transport take place inside the mitochondria. Glycolysis is the process in which one molecule of glucose is broken in half, producing two molecules of pyruvic acid of a 3 carbon compounds. During the Kreb cycle, pyruvic acid is broken down into carbon dioxide in a series of energy extracting reactions. The electron transport chain uses the high-energy electrons from the Krebs cycle to convert ADP into ATP.

[bmx]

Huh, funny coincidence how this video is uploaded while I'm studying for my Bio final tomorrow

[guitarttimman]

I must commend the instructor. This is an excellent representation of ATP.
Next topic: NADPH etc. 

[elitediagnostic]

Excellent in all aspects.. especially voice of narrator...as of Robert Kayun. Thanks 🙏.

[alignsource]

Great explanation! A level deeper than most I've seen...

[ThatAnnoyingBird]

You're the best. I had trouble grasping ATP + Cellular respiration in my Biology Workbook for Dummies, in which you actually explain it straightforward, get into the heart and core of the details later and in which they fit. Thank you.

[dylantrost]

It does take energy to recreate ATP from ADP and P, but it is important to note that making a bond involves a release of energy. The actual creation of the bond between P and ADP would release a bit of energy, but overall the creation of the unstable ATP from the more stable ADP would require energy. Similar to the hydrolysis of ATP, which overall releases energy because such stable products are formed from unstable ATP, but involves an initial absorption of energy to actually break the bond of the third phosphate. It's tricky and I've always been confused about the way it was taught, until recently.

[ShineBox-jnmh]

Wow I have some crazy Friday nights, I'm sat here watching a video about ATP.

[maxwellwarren]

Hello Khan Academy friends, DP biology teacher here (similar to AP). One thing I want to make clear that is video does not is about the points in time where energy is released and absorbed (needed). There are a few processes where bonds are formed and broken in the model shown. In chemistry, when bonds are formed energy is released. Energy is needed, or absorbed, when a bond needs to be broken. Yes this includes the phosphate group bond in ATP!!! Even though the phosphate group bonds are unstable, it is still a form of stability which needs energy to break it (some people replace unstable with high energy, this is why I tend to disagree with that terminology). It just happens to be that the formation of the bond with the phosphate group and the oxygen in the water molecule is more stable and thus releases the energy. The placement of energy before and after in the system comes out to mean energy is released in this chemical reaction, but that is from the formation of the bond with water rather then the breaking of ATP.

[higabkim_]

thank you so much, I'm from Brazil and I'm not an english fluent, but I could understand everything!!

[richardhobson]

Perfect timing as I'm studying ATP now.

[Razteah]

Omg semoga diberkahi, semoga dimudahkan segala urusannya untuk yg buat sub Indonesia 🙏

[Karim-stei]

How can we benefit from the energy we get by ATP Hydrolysis? By phosphorylation or by using the released energy (i think it is called gibbs energy) or both ways?

[TheJoshtheboss]

Is the Adenine with ribose, and 1 phosphate group (AMP) the same as the nucleotide used in nucleic acids?

[guitarttimman]

Who understands the phagocytosis process of Lysosomes and the functions of Rough Endoplasmic Reticulum?
And what is the purpose of the Golgi Complex? Can you explain the four stages of cell division? Etc.

[fm]

The energy stored in ATP isn't due to the negative charges of pohosphate groups? they normally tend to repulse each other but as they are kept together by the energy of the bond when they split they release that energy. Here is my curiosity: ATP can just split only one phosphate group but not the second one... Is possible that even the second phosphate group could be split? In that case it would release energy anyways (I presume), probably a lower amount of it but it could happen because of the repulsion between the second and the first phospate grupo (the one attached to the ribose).

[applesweet]

so basically when carbs protiens and fats are digested the energy taken from them is made into ATP so when the body needs energy the ATP turns into ADP with energy ? but what happens to ADP afterwards ??

[rawnaktesnim]

قل هو الله أحد الله الصمد لم يلد ولم يولد ولم يكن له كفؤا أحد

[zara]

I have questions: why ATP is called energy currency of cell not ADP (have same band),