Anaerobic Respiration

[@racheldoran9758]

Timestamps: 0:30 - Review of Aerobic Respiration 10:04 - The importance of oxygen in Aerobic Respiration 14:24 - Anaerobic Respiration (in animals/plants and microorganisms)

[@LSCBiology]

Rachel Thanks for doing this! How does it feel to be making a positive difference in the universe?!

[@h9.k]

what haopens to the lactic acid after though?? doesnt a buildup cause fatigue n is toxic....

[@LSCBiology]

Well that’s why we can’t respire anaerobically indefinitely. When oxygen supply returns lactate can be broken down to CO2.

[@h9.k]

ahhh ok thankyou, so is the lactate pathway reversible?

[@LSCBiology]

Not exactly reversible, more like a further metabolic reaction.

[@h9.k]

ah i see, thankyou

[@rubberdinghyraphid]

Hi please could you upload a quick video on Kidney Dialysis and include some important details about it. It would really help i have my exam next week and thats the only topic i find to be very vague.

[@juliettewesty]

if there's a question on the products of anaerobic respiration, would you say 'NAD'?

[@LSCBiology]

+Juliette W no, because NAD cycles between reduced and oxidised forms. It's not net produced or consumed

[@anwarhatem6365]

excellent. but could you please include a video that explains the ( Hormonal Control Of The Mestrual Cycle ) its a really tough topic and i am having a hard time understanding . thanks again for your vidoes

[@LSCBiology]

We haven't reached that point in our scheme of work yet but eventually I'll make that video, yes. 👍

[@anwarhatem6365]

thank you.

[@anns1960]

+LSC Biology what part of the spec is that?

[@lilmissvloger]

Why can glycolysis occur without oxygen with re-oxidised NAD but link and krebs don't ? Surely they could use the NAD made in anaerobic respiration?

[@LSCBiology]

+Leila Spicer good point. The NAD in the cytoplasm doesn't go inside. When oxygen is around, its H get moved into the mitochondria. But that needs active transport and excess ATP isn't available when oxygen isn't there.

[@lilmissvloger]

+Dr Bhavsar oh, okay so it's because of glycolysis occurring outside the mitochondria, whereas the other stages are inside ? I get it now :)

[@LSCBiology]

+Leila Spicer the H from NADH that's made during glycolysis can't get used inside the Mito IF the Etc has stopped. So it must be recycled in the cytoplasm.

[@lilmissvloger]

+Dr Bhavsar I get it! Thank you :)

[@soroushpaziresh3271]

Why wouldn't the enzymes be called Pyruvate hydrogenase in lactate fermentation and ethanal hydrogenase in ethanol fermentation?

[@LSCBiology]

In many cases, enzymes are named on the TYPE of reaction they carry out rather than the TYPE and DIRECTION. So, enzymes are named dehydrogenase as long as they transfer H. Also, enzymes may catalyse the reverse reaction under different circumstances. Unfortunately, we just have to remember the names they have, as sometimes, the reason for that name is too complicated for this level of study.