A-LEVEL Respiration: Step 1 GLYCOLYSIS. Phosphorylation of glucose, making TP and Pyruvate.

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Glycolysis is the first stage of aerobic respiration, but it also occurs in anaerobic respiration. Learn the three key stages in the biochemical reaction of glycolysis. I explain each stage in the reaction at A-level standard with visual diagrams.
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Пікірлер: 66

@aleshaa.x Ай бұрын

Paper 2 is literally on Friday and I've never understood this in my life up until now thank you so much 😭😭😭😭😭

@MissEstruchBiology Ай бұрын

😊😊😊 good luck!!!!

@kobejayy170 3 жыл бұрын

you saved my life

@MissEstruchBiology 3 жыл бұрын

aww so glad to have helped you 😊

@sreejaanand9128 Жыл бұрын

Excellent video 👍🏽👍🏽thanks for sharing ❤

@arajput1815 Жыл бұрын

Thank you, this video helped a lot

@hester6821 8 ай бұрын

You're a life saver! I was really struggling to get my head around the diagrams and phrasing my tutor uses, but watching this a couple of times really cleared things up for me! Many thanks :)

@MissEstruchBiology 8 ай бұрын

Ah thank you and I am so pleased that it's made things clearer for you

@user-rz4rw7tk9u Жыл бұрын

Thank you !!

@cantthinkofausername6945 2 жыл бұрын

Super helpful thankyouuu!!!

@MissEstruchBiology 2 жыл бұрын

So pleased it was helpful 😊 ☺

@zeenazeena2428 Жыл бұрын

Hi miss estruch thank you for the video, how would u recommend we revise/memorise this

@user-vi2mj5uy7r 2 ай бұрын

What do the arrows specifically show? Like is it the reaction, a process..because adp to atp (sorry other way) could come first so

@lukehudd2554 Жыл бұрын

Just a question i came across- ‘Describe How pyruvate moves through the membrane (2marks)’ How would i go about answering this, I’m thinking it’s active transport ?

@mehnazparween7828 2 жыл бұрын

mam you teach very well thank you so much👌

@MissEstruchBiology 2 жыл бұрын

Thank you! You're so welcome ☺️

@anastasia2291 Жыл бұрын

I love you thank you

@MissEstruchBiology Жыл бұрын

I hope it helped!

@user-vi2mj5uy7r 2 ай бұрын

Yo! Thank you!!!❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

@MissEstruchBiology 2 ай бұрын

youre welcome :)

@N1ght5ky 6 ай бұрын

Ahh thank you for your clarity, the textbook wasn’t so clear!!

@MissEstruchBiology 6 ай бұрын

😁😁 glad it helped

@daisytucker4498 2 жыл бұрын

Hi thanks for this video I wanted to ask where the phosphates go at the end when it turns into pyruvates

@MissEstruchBiology 2 жыл бұрын

they are used to phosphorylate ADP into Pi when the 4 ATP are made.

@iacs5687 11 ай бұрын

there is one phosphate with each triose phosphate then how 2 ADP are produced by each triose phosphate

@MrMidoo2010 4 жыл бұрын

You are fabulous tutor🌹 I luv ur accent ,it's so clear

@MissEstruchBiology 4 жыл бұрын

Thank you, I hope you find the videos helpful.

@MrMidoo2010 4 жыл бұрын

@@MissEstruchBiology offcourse MS, thanks really. It's my first time to be IG biology teacher , and it gonna help me through my introductory level course of 0610 syllubus curriculum.

@MissEstruchBiology 4 жыл бұрын

@@MrMidoo2010 Glad to hear it. Good luck

@meowcat4406 2 жыл бұрын

great video! i do have a question though ☺️ you mentioned that glycolysis occurs in both aerobic and anaerobic respiration because it doesn’t require oxygen or energy (atp). however, the first step of glycolysis uses atp to phosphorylate glucose to glucose phosphate?

@MissEstruchBiology 2 жыл бұрын

Hey yeah that's right, but that isn't directly using oxygen.

@richards1258 2 жыл бұрын

hey miss could you explain how triose phosphate helps to turn 2adp to 2atp if it only has one phosphate?

@MissEstruchBiology 2 жыл бұрын

Hello There are phosphate groups within the cytoplasm can be used too.

@rahmaziad7457 2 жыл бұрын

Hi, how did your Al biology exams go? and great Q!

@hafsakashif426 2 жыл бұрын

Have you uploaded the rest of the parts of this topic?

@MissEstruchBiology 2 жыл бұрын

hello, yes. All of this topic and the entire A-level Biology theory 😊 Hope it helps you

@stephanie4548 2 жыл бұрын

hi miss, could you explain what the adp and nad actually do in glycolysis?

@MissEstruchBiology 2 жыл бұрын

Hey, the NAD accepts H, so it becomes reduced, and this oxidises the sugars. The ADP is phosphorylated by Pi

@michaelrowland-us3he 2 ай бұрын

Is this what happens after eating carbohydrate food

@juliettecurran3173 2 жыл бұрын

Hi, we were taught that glucose is phosphorylated twice, first using one atp molecule to produce glucose phosphate and again to convert the glucose phosphate to hexose bisphosphate. Im guessing this is just an extra step so I was wondering if we need to know about hexose bisphosphate for the exam?

@AIContentx Жыл бұрын

I think so yeah it must be an update on the spec

@charliemcgee7587 Жыл бұрын

Just wondering when you say Glucose phosphate is that the same thing as hexose-1,6-biphosphate?This is the term our teacher used. Also if that is the case is glucose phosphate fine to use in an exam answer?

@MissEstruchBiology Жыл бұрын

Hey, this depends on which exam board. For AQA, glucose phosphate is the intermediate you need to know, but this may be different for different exam boards

@deathstar1229 2 жыл бұрын

If pyruvate molécules has to be actively transported into the mitochondria is there really a net gain of ATP molecules or is it maybe a net gain gain of one ATP after it’s been actively transported ?

@MissEstruchBiology 2 жыл бұрын

Hello, Because active transport is a process, rather than a chemical reaction, any ATP used for this isn't included within the calculation. The net gains is specifically referring to ATP production in respiration in the glycolysis stage. I hope that helps :)

@deathstar1229 2 жыл бұрын

@@MissEstruchBiologyThank you for your wonderful help

@kyo8905 2 жыл бұрын

hey miss why is the net gain of atp 2 and not 4?

@MissEstruchBiology 2 жыл бұрын

whilst 4 ATP were made, 2 ATP were initially used to phosphorylate glucose. So net gain of 2 😊

@SkippiVarndenkof 2 жыл бұрын

Hello, please could you tell me if TP the same as G3P? I'm Edexcel board.

@MissEstruchBiology 2 жыл бұрын

Hello, G3P is the same thing as GP, not TP. hope that helps 😊

@angelumeokaleo1859 2 жыл бұрын

im so confused with the whole aerobic anaerobic thing on the mark scheme. is glycolysis aerobic or anaerobic ?

@batbehavior 2 жыл бұрын

glycolysis is both! It's the first stage of both, but the link reaction going into the krebs cycle is aerobic only

@angelumeokaleo1859 2 жыл бұрын

@@batbehavior ohh okay thank you .

@MissEstruchBiology 2 жыл бұрын

that's it!

@allegedlyelysian 8 ай бұрын

atp is used in glycolysis

@kroaky6892 2 жыл бұрын

Is this Cambridge?

@MissEstruchBiology 2 жыл бұрын

AQA, but a lot of overlap

@angelstar7775 3 жыл бұрын

why deos the cytoplasm not require active transport of ATP and oxygen basically can you explain why glycolysis is the initial stage

@MissEstruchBiology 3 жыл бұрын

Oxygen is not a reactant in glycolysis which is why it isn't needed. The link reaction requires oxygen to bind with the carbon atom released to form CO2. ATP will diffuse out of the mitochondria due to the concentration gradient, therefore it is not active transport. I hope that helps