RESPIRATION - AQA A LEVEL BIOLOGY + EXAM QUESTION RUN THROUGH

In this video, I explain ALL of the content required for the "Respiration" section of AQA A Level Biology. This includes: glycolysis, link reaction, Krebs cycle and oxidative phosphorylation. Time stamps are in the comments section. The content in this video crosses over with other exam boards too!

I also go through a few exam questions and explain the mark schemes.

Please comment if you have any questions, I'll be more than happy to answer them!! :)

[seokjinkim]

also, the triose phosphate produced by the phosphorylation of glycerol, wouldn't it enter glycolysis and not Krebs cycle?

[erinstewart]

Watching these videos hours before my end of topic tests and still getting As is a blessing<3

[goldielocks]

Thank you so much for this video. My book complicates everything so much, this video was extremely easy to understand and I understand the topic really well right now thanks to you!

[pepsifizz]

this is unbelievably helpful. i’m failing miserably at the moment. i really feel much better for my test this afternoon. thank you!

[jasminei]

I’m struggling to understand this chapter but this has helped thank you :)

[mera]

Thank you for including the exam questions - i have an exam in 10 minutes and this helped me out very much!

[SH-btrw]

Thank you so much for this video! It was really helpful :)

[bk]

this video was great and helped me to get an A

[Farah-dcbb]

Why does the volume remain constant in the question at 25:28 ? Surely the same amount of oxygen wouldn't be taken up since one is aerobic and one is anaerobic?

[imogennnnn]

I thought NADP was reduced NAD, but the video stated that glycolysis produced 2x NADH. Does that mean NADP and NADH are the same? I though NADH was just normal NAD?

[cait]

for oxidative phosphorylation- would it not be 2NADH that is used?

[lydiazanetti]

your videos help me a lot thank you for making them

[AlevelBiologyHelp]

00:52 = Glycolysis
03:50 = Anaerobic respiration (fermentation)
04:52 = Link reaction + Krebs Cycle
10:17 = Lipids and amino acids can be used in respiration
11:24 = Oxidative Phosphorylation
15:06 = Exam questions and mark schemes

[nilakshipravin]

why link reaction and krebs cycle can't happen without oxygen?

[emmafive]

Is this everything we need to know on the spec or are there any gaps ❣️

[seokjinkim]

hello, can I ask if you need to know how many carbon atoms that each molecule contains? e.g. pyruvate (3C), thus 3 carbon atoms

thanks :)

[safandsound]

How come you didn't mention Hexose biphosphate?

[jasmin]

at 4:59 is that meant to be the link reaction?

[bestbest]

im in year 12, biology is easy for now but this is looking like a nightmare