Oxidation and reduction in cellular respiration | Biology | Khan Academy

[@qcages]

I've learn more from you than through all of the text books i've read and all of the lectures i've attended. These videos and the website help me so much to continue enjoy the process of learning. Schools are so F-ed up because they make kids hate school, and hate learning. Learning should be a process enjoyed by everyone, and you are doing so much to help keep that alive!

[@11becket]

Thank you so much! I'm so glad you pointed out the difference of oxidation & reduction from a chemistry point of view versus a biology point of view. Was driving me nuts. I can't thank you enough!

[@J0hnKyle]

Why am I paying tuition when when I am learning much more from these videos than my professor?

[@jordanfehr6680]

What u doing now?

[@YPEPDUCK]

You released me from a massive frustration created by the confusion about the definition of gaining oxygens. Thank you so much for your brilliant work.

[@first6digits]

Whoever coined the terms "oxidation" and "reduction" was sneaky and evil...

[@joannaguarino9509]

for real! "oxidation" you would think gained and "reduction" you would think lost!

[@TheDuvee6]

That's brilliant!

[@tikvahestrada4066]

My understanding, is that electrolyzed ionized water molecules with a negative 700 or higher alkalization, obtain the ORP oxygen reduction potential. Which enables cellular respiration because the molecules are shrunk with being ionized; therefore the cells can recognize the water molecules and absorb , detox, and eliminate the toxins of the cell, =hence cellular respiration.

[@shudhanshubhushan7387]

@@tikvahestrada4066 get lost.

[@ejmcmurtrie]

nightman, sneaky and mean...

[@thunderboltswimmer]

You have no idea how many grades you have saved from these videos

[@dvuono1]

I have a bachelor's degree in biology and PhD in microbiology I just learned so much from this explanation. Breaking it down as half reactions for each element was extremely helpful for calculating how many electrons come from a carbon source.

[@chuwah88]

it means being "stingy" here's a dictionary definition: verb ( hogs, hogging , hogged ) 1 [ with obj. ] informal keep or use all of (something) for oneself in an unfair or selfish way: he never hogged the limelight.

[@ThePremij]

This is sucha a great video that brings a clear concept about Redox happening in respiration. i learnt in 20 minutes more than what i learnt reading books for 2 hours. superb video. Thank you for posting.....please keep posting more videos .

[@GregMalaka]

You Mr. Khan, are the reason I got A's on my last Med Micro and A&P 2 tests.

[@Ake94]

your videos are very helpful, for not only are you giving your viewers a lecture but are also giving visuals. Unlike in class lectures, we are able to go back or pause the video if we did not understand something or missed what you said. I hope you will continue doing this.

[@Sethbacca]

This video is fantastic and does a much better job of explaining the process than the short little blurb that's in my A&P book. Thanks!

[@gilanin]

Thank you so much for these videos, you're a savior!

[@anthonyvillarama6806]

The best explanation for redox in biologist point of view. You can't find this anywhere but only here in khanacademy. Even most PhD people don't know this.

[@millerbritton3517]

Thank you so much for making these videos! This is the only things helping me pass my biology class!

[@many3440]

Clearest and most didactic video ever!!!!

[@TheFaysoo]

Deliver some lectures on Biotechnology and lab technologies like Polymerase chain reaction,ELISA you know what i mean. videos are too helpful DR.Faisal Khan

[@rawdonwaller]

Perfect. I finally get it.

[@mahms012]

glucose (C6H12O12) is broken down to triose phosphate which has molecular formula C3H5O6. since we make 2 triose phosphates we make C6H10O12 . notice there are 2H's missing which is why 2NADH are reduced in glycolysis. i got confused as to which atom loses the H's. from the diagrams it shows that the O's who bond to phosphate lose the H's. since O hogs the H electron, it actually loses H+ which is just a proton. just wondering how that is oxidation when a proton is lost not an electron?

[@madeofyucca]

Awesome. Very helpful review for my final. Thanks. This was very clear and well done.

[@goygoyable]

I learned so much more from this, rather than my teacher teaching me.

[@sciencenerd7639]

thank you Sal, this is fantastic

[@winniemurungi1014]

Thank you for this information. so helpful.

[@Chem4students]

nice video. great explanation. thank you sir. i started channel by inspiration of your channel .

[@gattimadhavi1360]

Thank you so much sir i not only clarified my doubt now came to know to recognise a oxidising and reducing agents in redox reactions

[@kellywoohu3239]

thank you so much for the example

[@hubertlewy3548]

I appreciate your work. Thanks!

[@ameilagrey9528]

That you for helping me survive AP Bio

[@katianovakk]

Why is there no Fermentation video? I don't mean to be ungrateful, but I really need one!

[@ironnica]

@TheSecretsofAngels handier one, oil rig: oxidation is loss, reduction is gain

[@koushiksridhar1714]

Thank you!

[@Swansen03]

@biozamadotcom the processes are cyclical, radicals have their purpose(fighting infection, etc), just as "anti-oxidants" have their purpose. Issues arise when one or another is out of balance, or proportion. If something cannot be utilized it will just be removed from the body.

[@sully42682]

Kudos, Sal.

[@fruitninja1776]

thanx so much for the videos, they helped alot, u teach it better than my teachers, they can't explain it, even in tutorials..-.- I might not actually fail this test:DdDDD

[@jinx2873]

i basically think of gaining and losing a H atom as gaining or losing a hydride ion (H-) and it makes sense in terms of chemistry AND biology

[@axeljj84]

great video

[@BBLitchi]

Thank you

[@mitochondria8426]

Just put my school notes aside... This video explains everything more precisely and understandably.

[@kisszzz]

@TheSecretsofAngels our teacher taught us way to remember this last weeek :D !!

[@chiefsnjet]

OIL RIG, Oxidation is loosing vs Reduction is gaining (electrons)

[@Jackyzappy1]

5:55 I am confused, and correct me if I'm wrong, but does that carbon (image from Wikipedia) need to have an H attached to it? Because the two oxygens require a double bond, that would use up all of carbon's four possible bonds...attaching a hydrogen would give it 5 bonds (impossible)..?

[@Dispersionify]

Explained parts of that way to quickly!

[@Hirgum]

Carbon electronegativity: 2.5, Hydrogen electronegativity: 2.2. This isn't a very big difference, but he makes it seem like carbon and hydrogen have this huge electronegativity difference. C-H bonds are not very polar (hence hydrocarbons are very nonpolar), so neither C nor H really "hogs" the electrons. I know that he probably says this to help, but I don't want inaccurate chemistry to be disseminated!

[@SchultzWolfe]

Carbon has 6 places it can bond with. Hydrogen has 1. so carbon would take it first. ie: Oxygen has 8 looking at there shapes - Carbon is a hexagon, Oxygen is a octagon. Hydrogen just gets thrown around.

[@kevincorrigan1754]

so would the end-game result be an endergonic reaction because all the oxygens on the products gained lots of electrons which means they gained energy right?

[@ahnjelen3398]

what do you mean by the word "hogs" on your lecture?

[@mafiaismafia]

Cause a college looks better then KZbin on a resume

[@keyholeGX]

@wowbotfixer stop hating, u need to understand the right way, this guy's MIT

[@DavidBcc]

Cool. I'm doing this at school right now with respect to hydrogen cars.

[@NJKjonasfan4ever]

unless he's using those pen computers, he's really goood at writing with a mouse?!

[@jsense01]

@TheSecretsofAngels hahahah... i use this anagram also...

[@SchultzWolfe]

6:10

[@shudhanshubhushan7387]

What happened

[@leedonghunkr]

Why his videos stop during the middle of lecture?

[@givemeyoursistersinstagram655]

Yes. Still happens on the app.

[@onfireupinhere22]

Hoverboards. I'm looking at you Mr. Khan

[@stopgettingtriggered]

@wowbotfixer grammar and punctuation, use it

[@ApurvaPopat]

get all those buffy teachers aside who are lending money for no reason...!!!

[@RottenAppleSeeds]

@Hirgum lol woooow! nitpick much? i'd understand if his calculations were completely incorrect, but you're seriously going to harp over a term? and actually, a lot of professors use the term "hog" in introductory courses because they just want the students to learn basic, and core concepts. the actual quantitative net charges of molecular bonds is covered in advanced biochemistry courses, not intro. using the word "hog" just helps students visualize the concept of electronegativity.

[@givemeyoursistersinstagram655]

Bro who r u fighting with here

[@jordanmorack9122]

1.5 speed is the way

[@Quraan.119]

2023 😮

[@idster7]

6:50 why would carbon hog electrons from hydrogen if carbon & hydrogen are equally electronegative?

[@nelmops]

I still think you're Charlie the Unicorn...

[@Cschive]

View 1000 :)

[@kobebryant9981]

@NJKjonasfan4ever i think he's using a pen computer

[@CaptainFluffy6644]

@wowbotfixer english please

[@gabrielfarias6997]

I dont understand. Why are you saying that the electrons are going from a less stable state to a more stable state. When the electrons are on the carbons the carbons are more stable. When they lose their electrons to oxygen they make oxygen even more electro negative. So how in the world are they going into a lower energy state. They would be entering a higher energy state because they would be making oxygen more electro negative and less stable. Please clarify that was really confusing and out of the blue