Haemoglobin (oxygen dissociation curve, Bohr effect, adaptations) | A Level Biology

[@Z7.8]

How can u summaries a 45-minute lecture in 7 minutes: Amazing, W0W

[@rebeccawills6220]

I takes me ages usually to simplify things and make things concise, you have saved me so much time thank you :)

[@biologywitholivia]

Thanks so much Rebecca, so pleased to hear it's helped you!

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I spent 5 lessons on this at school and yet this 7 minutes video is what it took to finally make me understand it. Thank you so much!

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Im in my 2nd studying biology at university and you explained this concept in 7 minutes better than my prof did in 20 haha, thank you !!

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Yeh only did it in 7mins cause she speed running

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Every time I see this video I find it more and more beneficial I even have linked it in my notes!!, thank you so much for this masterpiece 👏🏻

[@dungukassim1152]

Never found better explanation. Thanks a lot.

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The most perfect explanation ever 🙌❤

[@Wandererdove]

The first video that makes me thoroughly understand this graph, many thanks!

[@saminaijaz3917]

Thank you so much. This is actually a great explanation and a clear cut one. You didn't discuss anything that was not related to this topic💖💖

[@shazz0379]

This is the best video on the topic. Thank you so much.

[@vanshikakardam3777]

Hey! I'm from india and u are such a great way of explaining. Really a loads of love your work💕❤

[@emmaquigley7611]

I have never understood the Bohr effect until now, this was so helpful thank you so much

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Am from Ghana, amazing video by all standard

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I like the animation accompanied with the lesson. Thanks!

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It took me hours trying to understand without you and I don't know ❤❤

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[@emilyhull9963]

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[@lahmyusuf8898]

Understood under 7 minutes before going to write my exam thanks

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Thank you so much this was so useful!

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this was really really helpful! thank you for doing it!

[@drmanojgupta61]

Very cool and clear concepts

[@tamannagupta5326]

Thankyou soooo much Olivia I have been struggling with this right and left shift of the curve concept for so long but you made it so easy to understand. Lots n lots of love from India 🇮🇳🇮🇳❤️❤️

[@Thunderstorm.73]

Very good explanation. Thank you so much 🥰🥰

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your channel is amazing!

[@MA-wk4kk]

Hi thats a perfect video with super explaining but got confuse if u can explain plz left shift u mention has more affinity at lower oxygen pressure it isnt be at hight oxygen pressure

[@yasminh]

ty!

[@bilalbangash7731]

always remember that Hemoglobin does not usually fancy Oxygen but oxygen just wants free rides. It helped me to an extent

[@ridaakram389]

You're awesome! Subscribed!

[@esotericmedic2841]

Notes Hb= protein with quaternary structure found in RBCs whose job it is to transport O2 around body. O2+ Hb= oxyhemoglobin. At high Pp O2 (ie: Lungs)= high affinity for O2 so loads. At low PP O2 (ie: respiring tissues)= low affinity for O2 so unloads. Graph S-shaped due to initial co-operative bonding, but eventually becomes harder as Hb becomes saturated. CO2- Bohr effect- Curve shifts right lowering affinity for O2 as pH increases causing Hb to change shape (respiring tissues). Left shift = higher affinity, loads O2 in lungs at lower O2, good for low O2 environments, foetus etc. Right shift- lower affinity, more O2 unloaded at tissue, good for organisms with high metabolic rate.

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Can we get a PDF of the sessions please

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This video is helpful for ours 😃 thankyou

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Hi, are you going to be making anymore videos like this?

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I assume she uses a tablet and draws with a pencil rather than a mouse

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You explained this very well, thank you so much

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You and your voice both are cute....so sweet way of explaining 🙂😀

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CAN U PLS EXPLAIN WHAT HAPPENS ALTITUDE INCREASES?

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[@blankaszewczyk6040]

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[@harshjw1874]

Why are we ignoring their effect in lungs during right shift and in tissue during left shift . Because ultimately it will be difference in saturation of hb that will hive amount of O2 used by tissue

[@dewaryaneet3974]

Thanks for it.

[@noorulemaan176]

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[@pulkitverma8104]

Best ❤️

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Very helpful!!

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[@biologywitholivia]

Thank you Anisha, glad it helped!

[@evierussell6463]

This has helped me a lot to understand Thankyou!

[@biologywitholivia]

@@evierussell6463 Great to hear, let me know if you have any questions!

[@random6135-i8t]

thank you so much

[@milliedoyle3093]

v. helpful thanks

[@mayajohnson7172]

Thank you so much for this concise and easily digestible explanation. I will let you know how will I do on my exam next week.

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thank u so much aaaa !!

[@alaaamr7351]

Thank you

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Hi, thanks a lot

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please upload more videos

[@sherbetstraw8605]

that was soooooooooo good

[@qasimlbhai9603]

She could be a millionaire if there was an option for getting money everytime she said oxygen.

[@MA-wk4kk]

I mean at 5:35

[@utj9559]

Thank u

[@shanthala1345]

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[@areh0670]

1:37

[@jasmansangha487]

oxygen dissociation curve does not peak at 100% it peaks at around 95%.

[@AmoURpf]

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[@hamdahkamali110]

god bless u

[@Subject-B29gaming]

%saturation of Hb can never be 100%

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Waw 🌹

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youtube professors slap

[@samward8840]

you just said haemoglobin changes shape to make it easier for oxygen to bind, now your saying haemoglobin changes shape to make it harder to bind??????????????

[@marvel123_agents]

Haemoglobin has four haem groups, so 4 oxygen molecules can bind to each haemoglobin molecule. Once the first oxygen molecule binds, it becomes easier for the next three to bind. However, once 4 oxygen molecules have bound to haemoglobin, there is no ‘space’ for a 5th oxygen molecule to bind, so it becomes harder for more oxygen to bind

[@johnsina1303]

hey ;) x

[@Ritwfs]

Too easy