Chap 12 (Part 1b) Aerobic Respiration (GLKO) | Cambridge A-Level 9700 Biology
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- Опубліковано 20 лип 2021
- Based on the NEW! 2022-2024 syllabus
Cambridge Assessment International Education
9700 A2 Biology
Full Chapter 12 playlist:
• Chapter 12 - Respirati... Cambridge A-Level Biology notes, worksheets, topical past papers, videos without ads, and other resources can be now be purchased by chapter on www.genesisorigo.com/cambridg...
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Thank you so so much for this. The Ox Story takes the CROWN. Have a good day.
HAHA glad my BS story was helpful 🤣
Thank you so much for your videos, they are truly amazing! Got an A on my AS level bio exam this May/June and couldnt have been to able to achieve that without your content! ❤
The OX STORY IS A M A Z I N GGGGGGGGG!!! THANK YOU, OMGGG!!! 💜💟
i never understood it but you're a saviour!! i love you!! your channel is so underrated i hope it grows alot I'll recommend it to as many people as i can!
Thank you so much, Miss Beh. Your videos are awesome. When I pass my exams, you're one of the people I'm definitely going to thank.
Please, do you know any UA-camr that is as good as you for Chemistry and Physics Alevel?
Check out @etphysics for Physics! not sure for Chem
allery chemistry
Yeah @etphysics is good
THE OX STORY WAS AMAZING I IMMEDIATELY LEARNED IT THANKKK YOUUU
THANK YOU SO MUCH MS.BEH!!!! 😭❤
Thank you so muchhhhh 😊
THANK YOU SO MUCH...my biology teacher at school is basically a dumbass, all she knows is copy notes from save my exams and read it out🙂, you are a brilliant teacher in every way!
ms beh thank you so much for all of your videos!! i really love your story on the ox, as I remember better with a story. i started laughing when I realised what you meant by reduced fat (reduced FAD) and vomiting coconuts (CoA, NAD and reduced NAD) HAHAHAH. i will definitely use this to memorise! i love you
🤣🤣🤣 I just woke up weird the day i came up with this nonsense
AHAHAHA but it's really good
There is something about you lectures that I fail to live without.. you direct simple but detailed. Whenever am in for you videos..I don't even want scratch somewhere itching😋 just to pay attention....good luck
hello maam thank you so much for the amazing lecture i have a question though,do we have to learn all the structures of nad,fad or atp for our exams?
You need to recognise them and know the general structure. No need to know how to draw!
Hello Ms! At 4:40, must we know why adding phosphates raises chemical potential energy, or should we just accept it and memorise as is? I'm a little confused as to why adding/removing phosphates causes chemical potential energy to increase/be released. Thanks!😄
In general, bonds can "store" energy. Forming bonds increases chemical potential energy of the molecule, breaking bonds releases energy. More info here! Not in the syllabus, just for understanding aklectures.com/lecture/strong-and-weak-bonds/energy-storage-in-chemical-bonds#:~:text=The%20answer%20is%20that%20most,used%20to%20do%20useful%20work.
Amazingly explained! Can you please tell why we need H+ in the inner membrane space?
To set up a proton gradient! 😂 Why this way? .....God created it, ask him...?
@@behlogy I understood it later on through your videos, but thanks anyways!
Hello Ms. Beh, in your video you mention that the ATP produced during Glycolysis is due to Substrate-level phosphorylation. However in a past paper question and in the CIE textbook it uses Substrate-linked phosphorylation instead. Can these be interchangeably used or are they different? (The past paper question is 2020 MJ 41 Question 6a (v))
It's the same and interchangeable! Hehe
Thank you so much !!!
Hi Mrs greetings how are you, your videos are amazing but sadly i wasn’t focused enough in AS level, soo I got very low marks, I would recommend you if you can give online classes I will be your first student, it can be quick and simple Atleast I can clear my doubts😂, but I would be glad if you arrange online classes that will be great, Thanks Mrs BEH
Aaaah i currently just dont have time to conduct tuition classes. Will post in community if i do 😊
Thank you ❤️❤️❤️❤️❤️
Ikr she's out here saving our grades. A legend
gretings Ms Beh, do I need to memorise these all stuffs😭?
Yep... I recommend making a huge mind map to make sense of it.
did u do the fad equation right cause there is 3 plus ions should we have 3 e- instead of 2e-?
Hmm pretty sure it's 2H+ and 2e- Did I get it wrong? May have been a typo! Thanks for pointing it out xD
How can we have 4 ADP for the initial reaction? 8:15
ADP and inorganic phosphate is needed to make ATP. we made net 4 x ATP, so we must have 4 x ADP to make in it the first place. It's not in the flow diagram
MS do i need to know all those details of NAD, FAD and NADP for 2022-2023 Examinations for A level?
Yep.
even if they're removed from the course book edition u still need to know them by hard to get the rest of the chapter easily and be able to answer the essay questions u never know
If the movement of 3 protons is required to make 1 ATP molecule, how can 1 NADH give 2.5 ATP? And why does FADH2 gives even less than that, when it has more hydrogens?
It's a theoretical number. Bcs some ATP is used for other things in the process... Like active transport of substrates needed, synthesis of some things etc.
ma'am i am still confused with substrate level phosphorylation and production of those 4 ATP molecules in glycolysis. Can you please help.
Hi, what confused you exactly?
@@behlogy I am actually confused about how those 2 ATP are formed after dehydrogenation/oxidation before the intermediate??
miss didnt you say that when 3H+ ions move into the matrix from the intermembrane, 1 ATP molecule would be produced? but in the animation that you showed, it doesnt prove that.
yeahhh the animation is just a representative diagram. it's not an exact replica! it's from Bioninja btw! the creators did such a good job
@@behlogy of course, they did an amazing job! i was just confused. thank you miss.
Miss you cover the syllabuss breifly right? You dont go into detail for e.g resporatory quotient is missing
I go through everything, and it's in the next video
Hi Ms Beh! Which of the four steps of GLKO are substrate linked reactions?
Also Ms, what is the difference between substrate linked reaction and substrate level phosphorylation?
Watch the next video in this playlist!
Thank you!
Hi Ms. Beh! I have another question 😭 Reduced FAD is FADH2, meaning it carries 2 Hydrogen atoms? But during oxidative phosphorylation, you said that each reduced FAD molecule produces 2 ATP as electrons from FAD enter the etc at a later protein. Shouldn't each reduced FAD molecule produce 4 ATP instead of 2 because it carries more hydrogens, and therefore more electrons?
Theoretical number! Bcs some ATP is used in other active processes at the same time.
do we need to know the details for the features of ATP synthase?
Yess
@@behlogy okay tyy ^^
Where does the ADP come from?
Well our body does convert some from food into ADP, other ADP is recycled from ATP that's broken down
Miss, you said for every 3H+, 1 ATP is formed. But, 10 NADH and 2 FADH2 go into the cristae, doesn't that make it a total of 14 H+? 14 H+ will make 4 ATP then. Or, am I getting it wrong? Please, explain how a total of 28 ATP is formed from oxidative phosphorylation.
It's a theoretical number. Some ATP is used in active transport of substances needed into the mitochondria. And more than 3H+ exists in the mito
I don't get how 1 NADH produces 3 ATP cuz wasn't it that 1 ATP is produced by 3 H+ and NADH has 1 H+ so i'm guessing that 3 NADH should produce 1 ATP or is it that NADH having one H is for simplification reasons and it actually produces 9 H+ or something.
Okay breathe. It's a theoretical number someone with a PhD has worked out for us, bcs there are actually more factors at play and it isn't that straightforward. It takes into account energy needed to transport substrates from the cytoplasm into the mito and things like that. Accept it for now hehe
@@behlogy ah so the hydrogen in these molecules isn't connected to how many ATP they're able to produce
are we supposed to know the structure of nad and the rest
Dont need to memorise and draw. Just understand it is 2 nucleotides with different bases. Familiarise with how to read the structure. Past paper questions included the structure shown and asked for comparison of structure.
what if i were a plant.....
I hope you like insects and creepy crawlies...
looooooooll
@@behlogy
Looks like pura pakistan behlogy dekhta hy 😅😂
Sorry translation please...? 🤣
@behlogy Looks like whole Pakistan watches your channel 😂
vey nice ma,am .Why don,t you star teaching at zoom and get paid for it .I will be your first student to pay fee.
Hahaha bcs I don't have time T. T