AEROBIC respiration: The LINK REACTION and the KREBS CYCLE for AQA A-level Biology.

The link reaction and the Krebs cycle (also known as the citric acid cycle) both occur within aerobic respiration. I got through the biochemistry of these processes in the level of detail required for AQA A-level Biology.
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[@MissEstruchBiology]

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[@MissEstruchBiology]

ahhh fingers crossed!!! Keep putting in the practise and trying exam questions too 🙌🙌

[@abdulwahid5504]

thank you so much for these videos. they are so helpful and explain these topics so easily.

[@MissEstruchBiology]

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I'm really pleased these videos are helping you

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[@MissEstruchBiology]

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Am so grateful for these videos as it has made A level biology so simple and interesting 😊

[@MissEstruchBiology]

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[@Fan-vv8wb]

Do we have to know that from 6C to 4C the actual steps I.E 5C formed and etc. or can we just say overall what happen like you explained in the video

[@nobody0-070]

The explanation is very clear. Thank you.

[@MissEstruchBiology]

So glad you found it helpful 😊

[@jojohairline3847]

thank you , I understand perfectly in the link reaction why wasnt 2 acetate molecules being produced mentioned? does it only produce once because I thought the acetate would be produced twice as there is two pyruvate molecules.

[@shattabhowmick8370]

Thank you so much!!! All these videos are helping me so much so could you please make a playlist with all the practicals please because my school skipped many and I'm really struggling with practical exam questions..

[@MissEstruchBiology]

Hello,
I am glad you are finding them helpful!
I will be adding the practical videos throughout the year, but I will definitely put them all onto a playlist so you can see what is there already and it highlights when they are loaded!

[@kingmasud8086]

In the link reaction, where does the oxygen come from to make the CO2?

[@MissEstruchBiology]

From gas exchange ( eg. diffusion in alveoli and then transported to respiring tissue via haemoglobin )

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[@MissEstruchBiology]

So pleased you like my videos :D

[@angelstar7775]

the products for link reaction for 1 pyruvate does it not form 1 NADH 1CO2 1ACETYLCOA because a pyruvate is only 3 carbons so 1 is lost to make CO2 which then forms acetate but how does 1 glucose form 2 CO2 that doesn't make sense

[@MissEstruchBiology]

for one molecule of glucose you make 2 x pyruvate (glucose is 6 carbons, so it splits to make 2 x pyruvate a 3 carbon compound).
Therefore, for 1 glucose molecule, the link reaction happens twice, which is why you get two CO2 .

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[@MissEstruchBiology]

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didn't help at all well done

[@MissEstruchBiology]

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No need to be toxic. Just state your issue.

[@eelliy7646]

@@hammad3180 did babes i said it didnt help

[@hammad3180]

@@eelliy7646 lol. Its a whole process. What part did you not get? If you didnt get anything then that really is a "you" problem.

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Please at miss estruch kindly send me your email . Or anywhere I can get your email

[@MissEstruchBiology]

Hello my email is [e-mail]