oh my god, sir, you are hands down the best youtube teacher i came across. was really struggling to find one and suddenly this otter came to be and told me about your channel. couldnt thank the otter much but thanking you instead. THANK YOU. keep making these videos please. hopefully will watch all the videos. please make for a2 as well 😭🙏🏼
I have my bio AS CIE tomorrow... I'm so grateful I watched ur videos throughout my AS year ... I literally didnt know both Ch9 and Ch11 till today and I was so stressed as I have my exam tomorrow... decided to watch your playlists for the chapters, Watched it at 2x speed and I SWEAR THE EXPLAINATIONS WERE SO AMAZING THAT I UNDERSTOOD BOTH THE CHAPTERS IN 3 HOURS...! THANKYOU SOOO MUCH SIR! U MADE BIO SO MUCH INTERESTING (Bio was my least favourite subject in Olevels but after being taught by you in AS , it became my fav subject) ... If I score an A in my AS, its just because of you... I can never thank you enough.... Luv from PAKISTAN 🇵🇰!!!! I recommended ur channel to many of my classmates aswell ... Lets get that silver playbutton💪🏻💪🏻
I have bio AS exam this month. This channel is very good for reviewing or even for starter. You saved me a lot of time and gave me great understanding. Thank you so much
really appreciate the videos u make🥲 really helpful and u explain everything clearly and in detail. i wish there were vids like these for chemistry too 😭😭
THANK YOU SO MUCH FOR YOUR LECTURE VIDEOS! You said in your video that we can substitute sucrose in place of amino acid if question ever asks AND GUESS WHAT! THEY DID!
Your videos are very helpful and I’ve read this physiology before and I knew a good bit but it was explained so well I learnt new things and expanded my knowledge
Does passive diffusion in general pass polar substances or non polar (H+ is polar) but markscheme says PASSIVE DIFFUSION CONDUCTS TRANSPORT OF CO2 (non polar) somewhere
The video was great tysm but I just have a small stupid question 😭😭why does sucrose need hydrogen can’t it just go by itself by a pump or smth thru active transport??
lmao, it isn't a stupid question. It is quite valid actually. Honest answer? I don't know why either. Sometimes, things are just there, because organisms evolved that way randomly. My assumption is, actively pumping out H+ uses way less ATP than trying to actively pump sucrose by itself.
WAIT WAIT I JUST GOT A QUESTION IN THE MOCK ABT 'explain and describe the mechanism of phloem sap movement into the phloem sieve tube elements' is it the same as amino acids and sucrose?
@@OtterBioTutor sucrose travels by active transport using the co transporter, this co transporter protein IS A CARRIER PROTEIN, which conducts facilitated/passive diffusion for H+ and active transport for sucrose, AM I RIGHT?
your so good at explaining and drawing makes studying biology so much more easier. thought i have a question about the hydrogen gradient. since sucrose diffuses with hydrogen ion does hydrogen ion stop diffusing into the companion cell when sucrose molecules are no longer left out the companion cell or does it continue to diffuse without hydrogen ion
The hydrogen ion is needed to provide energy to the co-transporter. So without its presence, sucrose will not be able to diffuse across. To answer your question about what happens when there are no sucrose instead; the hydrogen ions will still continue moving across the cotransporters regardless.🦦
SIR, HI, I THOUGHT PASSIVE AND FACILITATED DIFFUSIONS WERE THE SAME, I MEANT H+ IS POLAR, IT CAN TRAVEL ONLY BY WATER FILLED PORE, FACILITATED DIFFUSION IS PASSIVE DIFFUSION RIGHT?? PLEASE REPLY, 😭
oh my god, sir, you are hands down the best youtube teacher i came across. was really struggling to find one and suddenly this otter came to be and told me about your channel. couldnt thank the otter much but thanking you instead. THANK YOU. keep making these videos please. hopefully will watch all the videos. please make for a2 as well 😭🙏🏼
you're welcome :)
Definitely, he makes things easier.
Without any doubt, YES !
Thanks a lot YOUR VIDEOS ARE THE BEST ON THE INTERNET i swear i cant thank you enough
i hv my AS like in 3 days ur videos are sucha blessing actucally thank u so much
I have my bio AS CIE tomorrow... I'm so grateful I watched ur videos throughout my AS year ... I literally didnt know both Ch9 and Ch11 till today and I was so stressed as I have my exam tomorrow... decided to watch your playlists for the chapters, Watched it at 2x speed and I SWEAR THE EXPLAINATIONS WERE SO AMAZING THAT I UNDERSTOOD BOTH THE CHAPTERS IN 3 HOURS...! THANKYOU SOOO MUCH SIR! U MADE BIO SO MUCH INTERESTING (Bio was my least favourite subject in Olevels but after being taught by you in AS , it became my fav subject) ... If I score an A in my AS, its just because of you... I can never thank you enough.... Luv from PAKISTAN 🇵🇰!!!! I recommended ur channel to many of my classmates aswell ... Lets get that silver playbutton💪🏻💪🏻
Good luckk for tom!!
Running video at 2x was never so relatable 😂 best of luck
@omaimanaveed tysm!!!💜💜 (Read your reply late😭, done with the exam✨️)
@Ipb18 hahahaha, thats common among all of us I guess😂😂😂 and THANKYOU SO MUCH!!!
@@saniyahzeeshan how was your paper , I thought it was too lengthy. Kudos to sir otherwise I would be struggling so much today 😭
We just did this chapter at school and i had very little understanding of the chapter and u uplaoded this at the golden time, THANK YOU SO MUCH
Your teaching is at another level, if I get into a good uni all the credits go to you
😆😄
I have bio AS exam this month. This channel is very good for reviewing or even for starter. You saved me a lot of time and gave me great understanding. Thank you so much
really appreciate the videos u make🥲 really helpful and u explain everything clearly and in detail. i wish there were vids like these for chemistry too 😭😭
THANK YOU SO MUCH FOR YOUR LECTURE VIDEOS!
You said in your video that we can substitute sucrose in place of amino acid if question ever asks AND GUESS WHAT! THEY DID!
I hate plant transport and can't study it for the life of me. Thank you for carrying me through this chapter 🙏🙏
Your videos are very helpful and I’ve read this physiology before and I knew a good bit but it was explained so well I learnt new things and expanded my knowledge
God bless this soul
I will gladly pay for your notes if you made any! Thanks so much for this video!!!! Saved my mocks for real!
i don't have any notes, sorry.
❤so grateful thank you
I now have hope for biology, thank you sir
Very good explanation and easy drawing helps in understanding
Thank you once again
Do the sucrose and protons transport into cell wall or in the space between cell membrane and cell wall?
Ottar bio tutor video in 1.75x = better then any academy, college and tutors
can you even understand me at that speed??
Does passive diffusion in general pass polar substances or non polar (H+ is polar) but markscheme says PASSIVE DIFFUSION CONDUCTS TRANSPORT OF CO2 (non polar) somewhere
The video was great tysm but I just have a small stupid question 😭😭why does sucrose need hydrogen can’t it just go by itself by a pump or smth thru active transport??
lmao, it isn't a stupid question. It is quite valid actually.
Honest answer? I don't know why either. Sometimes, things are just there, because organisms evolved that way randomly.
My assumption is, actively pumping out H+ uses way less ATP than trying to actively pump sucrose by itself.
@@OtterBioTutor ohh ok thanks!!
WAIT WAIT I JUST GOT A QUESTION IN THE MOCK ABT 'explain and describe the mechanism of phloem sap movement into the phloem sieve tube elements' is it the same as amino acids and sucrose?
you have to talk about the active loading process, yes.
@@OtterBioTutor OMG I GOT IT RIGHT!!!! TYSMMM
wait so then since h+ ions are passively diffusing so sucrose is transported my proton pumps by facilitated diffusion right?
h+ are passively diffusing INTO the companion cell, and sucrose follows it, using the co-transporter, not the proton pump.
@@OtterBioTutor ahh i see tyty
Thanks bro
hi sir, will there be any unloading of sucrose ask?
i dont think it will come out.
hello sir can i ask why in step 2 it isnt facilitated diffusion?
because facilitated diffusion involves moving down the concentration gradient. The sucrose concentration gradient does not matter in this case.
PASSIVE DIFFUSION IS FACILITATED DIFFUSION RIGHT????
@@OtterBioTutor sucrose travels by active transport using the co transporter, this co transporter protein IS A CARRIER PROTEIN, which conducts facilitated/passive diffusion for H+ and active transport for sucrose, AM I RIGHT?
@@mashiatislam2036 ur right facilitated diffusion is just like normal diffusion but through proteins
@@deewho1943 MARKSCHEME says Simple diffusion and Passive diffusion are the same that transports yk non polar sht
your so good at explaining and drawing makes studying biology so much more easier. thought i have a question about the hydrogen gradient. since sucrose diffuses with hydrogen ion does hydrogen ion stop diffusing into the companion cell when sucrose molecules are no longer left out the companion cell or does it continue to diffuse without hydrogen ion
The hydrogen ion is needed to provide energy to the co-transporter. So without its presence, sucrose will not be able to diffuse across.
To answer your question about what happens when there are no sucrose instead; the hydrogen ions will still continue moving across the cotransporters regardless.🦦
SIR, HI, I THOUGHT PASSIVE AND FACILITATED DIFFUSIONS WERE THE SAME, I MEANT H+ IS POLAR, IT CAN TRAVEL ONLY BY WATER FILLED PORE, FACILITATED DIFFUSION IS PASSIVE DIFFUSION RIGHT?? PLEASE REPLY, 😭
Wow mashiat u exist everywhere😅
@@adibaltahsin2305 Highlighted reply bro