ahhh this is so useful to revise for my unit test...super to the point with all the detail you need for exam Qs. Your channel is definitely going to help through my a levels
I have just enrolled in OSC A-Level Biology, chemistry and physics and I think you are going to be my new best friend. If only there was a Chemistry Carol and a Physics Carol too! Let the learning commence!
Sorry for the late reply! Delighted that I might be useful - do have a look at my website www.biologycarol.co.uk which has all my videos (properly made and edited!) each one with exam questions gone through at the end. this might be a really useful resource for you. its my genuine attempt to make a level biology accessible to all students regardless of income. Suss out Eliot Rintoul for A level chemistry - he gets great reviews! I'm afraid I don't have a recommendation for Physics though 🙁 Please let me know if you find one!! All the VERY best x
From an 'older' student doing an online HE course, your videos make a very welcome change from reading reference books. You really bring the topic alive. thank you
Hey Carol! This is amazing! Im doing a second round of AS-Bio (edexcel), as the first time round was a disaster. You explaining what the examiners want to read really helps! Will definitely stick around for more, hoping it will help for January 2020. Is there a video on the properties of water? I also have a suggestion: would it be possible for you to take a Past Paper (eg. edexcel) and go through some questions, together with the mark scheme, so we have an idea on how to answer them correctly? I myself really have trouble wording my answers, and the Markscheme only mentions the correct words/ "idea of xy".. so I lose marks, eventhough what I said was technically correct.. Keep up the great work!
So sorry, TH-cam has not notified me of any comments hence this very late response 😬 So sorry I didn't see this! Yes - there is a water video and it makes clear exactly what you need to know for each exam board.
Fantastic Bella! DElighted to hear it 😊 If this has been helpful you might be interested in taking a look at my website where I have my full complement of AS biology videos on offer for £25 for a year's subscription (or both years' for £50 for a year). There's a freebie on there 'How to improve your grade up to an A*' so might be worth taking a look 😊 www.biologycarol.co.uk
Hi can you do a video on a level biology on the topic of cells function of how u identify rough endoplasmic reticulum, the golgi body basically all the functions and structures of prokaryotic and eurokaryrtic cells. Basically what they have similar and different in them. But this video was so helpful I watched this first then go through my textbooks makes everything easier. Continue what u are doing it's great.
It's in the pipeline, but in the meantime: RER - looks ROUGH because of the bumpy ribosomes (little dots) on the outside (literally why it was named that, when first sighted down an electron microscope). SER - SMOOTH version of RER because no ribosomes. RER and SER are the underground tube systems of the cell - they TRANSPORT. RER - transports proteins because ribosomes make them. SER transports the other 2 main molecules - fats and carbs. Both RER and SER 'layers' are always JOINED by little 'membrane bridges'. on the other hand... Golgi always looks like a stack of plates - NO 'membrane bridges'. The proteins made by the RER are budded off into vesicles (the cell's little suitcases - they transport bundles of stuff) and are taken to the Golgi which modifies and packages (THE words to use in an exam) the proteins by adding things like a bit of carb to them (to make a GLYCOprotein) or a bit of lipid (to make a LIPOprotein). Once the Golgi has done its job, it buds of vesicles full of 'finished' protein and transports them either to other parts of the cell or out of the cell (the vesicle FUSES with the cell membrane to release contents = exocytosis). Hope that helps...xx
your videos are very helpful! i couldn't thank you enough! Could you please do a video on plant structure and fibers? i find trouble in learning them (edexcel board) .
No. The details about amylose will be where you earn the marks. (Amylopectin details are required by many other syllabuses, so handy to know it exists, if doing biology- related uni course)
All the VERY best! Feel free to check out my website www.biologycarol.co.uk where my FULL complement of videos (all with exam questions) live 😊. Download the 'How to improve my grade up to an A*' at least! This website is all about me trying to make A level biology accessible to students, regardless of their family income x
Hi Kazi, Sorry for the belated response - I've been away 😊 I've done ones on lipids and proteins as well as carbs and they are all on my website www.biologycarol.co.uk. Because TH-cam pays very little with a 'niche' 10K subscribers I have the whole A level course of videos on the website for which I charge, I hope you will agree, a pretty small amount for a year's subscription (£50 if you just need Yr12). You can earn the cost back with 10% commission on any friends' purchases, and there's a freebie - How to improve your grade up to an A* - so worth having a look, I hope! My genuine aim is to make A level biology accessible to all students, regardless of family income.
Do feel free to check out my website where ALL my videos are (covering whole of AQA and OCR A syllabuses by end Jan) - www.biologycarol.co.uk. This is me seriously trying to make A level biology accessible to all students regardless of family income...
Hi biology carol, I am Kenneth, a CIE A Level student from Malaysia, I have just started my programme this January 2020,I came across your channel because of Unjaded jade. I find your videos amazingly good as it is very straightforward and well articulated. However it would be so much better if you could include CIE A level’s syllabus and too, more common mistakes made by students in your upcoming videos. But anyway, it has helped me a lot and once again, thank you so much. Besides, could you explain more on how glucose turned into ring form instead of being in a chain form? Thank you so much.
Hi! I would love to be able to cover every syllabus! I’d rather do fewer well than more badly. Thank you for the comment about common mistakes - I will definitely bear that in mind with future videos. Thank you!
Hi! Because the FULL full full set of videos that covers the whole of the AQA and OCR A syllabuses are now available on my website for (what I hope you'll agree) the very reasonable price of £50 for a years subscription. That's the cost of 1-2 hours of private tuition for the WHOLE COURSE! Even with 8.3K subscribers TH-cam pays me about £20/MONTH which simply isn't enough for me to keep doing this. I'm passionate about making A level biology accessible to students regardless of their family income so you can earn your subscription cost back by earning 10% commission on friends' purchases. Hope this makes sense to you. AND there's a freebie on the website (how to get up to an A*) so do have a sneaky peak and grab that!
Thank you! Do feel free to check out my website where ALL my videos are (covering whole of AQA and OCR A syllabuses by end Jan) - www.biologycarol.co.uk. This is me seriously trying to make A level biology accessible to all students regardless of family income...
@@HA-kb1xj That's the Greek letter psi which stands for water potential. If the water potential isn't affected, it means that water will not be gained or lost from the cell as a result of osmosis (the definition of osmosis is the net movement of water from higher to lower water potential through a semi-permeable membrane - does that sound familiar
I’m really confused with the cellulose section of the video, what does it mean when you say that the beta glucose rotates 180 degrees. Your videos are very helpful and you explain the topics really well.
Thanks for the Q Aneesa and I'm sorry it wasn't clear🙁 Beta glucose has its OH groups diagonally opposite each other (alpha glucose has them both at the bottom). Because of this, so that the OH groups can align to form glycosidic bonds in the beta glucose polysaccharide (cellulose), alternate (every other) beta glucose in cellulose, flips through 180 degrees (literally rotates so that the top of the molecule is on the bottom and the bottom of the molecule is on the top). This means that the OH groups are now next to each other to make the glycosidic bonds. this, in turn means that the molecule ends up being linear (straight line) rather than helical as in amylose (starch molecule, the polysaccharide of alpha glucose). This in turn allows many cellulose molecules to stack up next to each other and form H bonds between them, which forms the microfibrils. These mesh together to form the cellulose cell wall which is strong enough to stop the plant cell bursting when its packed full of water. Does that help? Come back to me if not x
@@biologycarol THANK YOU, this helped me so much. The video was extremely useful and explained the topic very clearly, I just found that part of the topic hard, Thank you, I now fully understand the topic.
Thank YOU so much - that's really encouraging 😊 If you like what I do, take a look at my website www.biologycarol.co.uk. There's a freebie on there - my totally updated video on 'How to improve you grade to an A*' - so do grab that! For a really quick explanation about my website and videos do take a look at my channel trailer th-cam.com/video/7sfl8_aAWk0/w-d-xo.html Just so you know... INTRODUCTORY OFFERS! £25 would buy you a year's subscription to ALL my AS videos ( the cost of 1/2 hour of private tuition) PLUS 25% next year's subscription when you'll need access to ALL the videos. £50 would buy you a year's subscription to ALL videos (the cost of 1 hour of private tuition) AND if you buy either of these you get the opportunity to earn 10% commission on any of your friends' purchases (using a personalised link that you can share). You could end up making a profit on subscribing! This is me seriously trying to make A level biology accessible to all students, regardless of family income - there's my goal😁
biology carol That sounds amazing, I’ll be sure to check that out, I will say I love how you aren’t doing this for TH-cam but because you genuinely care and have a passion for biology, everyone needs to know who you are !!
@@aneesakahn7728 You are lovely! Feel free to subscribe to a 'bundle' of videos and then make a huge profit by getting a load of friends to subscribe too😂😂😂. Or just spread the word about this channel (and all the Livestreams - the bottom line is that students who need help should get it - not just those who have a load of money!!
LOVE the name 😁 Yes, I do 😊 The full set of Yr 12 & Yr 13 videos is on my website www.biologycarol.co.uk andis available for a year's subscription for £50. Just Yr 12 stuff is £25 for the year AND for both subscriptions you get the opportunity to earn 10% commission on any of your friends' purchases - you could end up making a profit! This is me making a very serious effort to make A level biology accessible to all regardless of family income... Take a look at my new channel trailer for the full 'story'! th-cam.com/video/7sfl8_aAWk0/w-d-xo.html
@@lacerav5818 No! 😁 You get instructed, as soon as you've paid to cancel the annual subscription (and i send you another email to remind you, just in case!). I know you only need to subscribe for a year, but the selling platform I'm using only allows recurring subscription - hence my instructions to you to cancel once you've paid for the 1 and only year you need. Hope that makes sense. I've now made the website even clearer regarding this so thank you for raising it x
Thank you SO much! Really pleased it helped 😊 If you're struggling with any other topics you might want to quickly check out my website www.biologycarol.co.uk where I have all my videos available for a VERY small yearly subscription (£50 for Yr 12 and 13 topics and £25 for Yr 12 only). Sadly, I have to charge something - I earn
Yes! there should also be H and OH groups on the C2 and C3 but I don't put any of them on because the things you HAVE to know at A level is the relative position of the H and OH groups on C1 & C4 for alpha and beta glucose. I have used the AQA A level syllabus (slightly dodgy) structural diagram for alpha and beta glucose. I thought i made a reference to the fact that the diagrams are not 'chemistry perfect' but focus on what A level biologists need to know, but I can't remember exactly now tbh! Does that make more sense?
@@brummiesteve2174 Fair comment. I'm intrigued as I haven't come across an OCR exam question that requires the full displayed formula for alpha or beta glucose from memory (ie without giving you the full displayed formula of one of them on the paper). If it's a past exam question, any chance of you taking a photo of the Q and mark scheme and sending it to me at biologycarol@outlook.com??!
Just so you know - I've a full collection of A level biology videos on my website www.biologycarol.co.uk For a really quick explanation about my website and videos spend 2 minutes watching my channel trailer! th-cam.com/video/7sfl8_aAWk0/w-d-xo.html Just so you know... INTRODUCTORY OFFERS! £25 would buy you a year's subscription to ALL my AS videos ( the cost of 1/2 hour of private tuition) PLUS 25% next year's subscription when you'll need access to ALL the videos. £50 would buy you a year's subscription to ALL videos (the cost of 1 hour of private tuition) AND if you buy either of these you get the opportunity to earn 10% commission on any of your friends' purchases (using a personalised link that you can share). You could end up making a profit on subscribing! This is me seriously trying to make A level biology accessible to all students, regardless of family income - there's my goal😁
@@biologycarol I have asked my biology teachers, and he has comfirmed that there are indeed two different forms of maltose, there can be both an alpha and a beta form so b+a and a+a
@@aftina.hn.4369 OK - happy to accept that. However, for your A level biology you aren't actually REQUIRED to know about a and b glucose except that a glucose makes up starch and glycogen and b glucose makes up cellulose. For the disaccharides, you just have to know the monomer's names not which stereoisomers are involved.
@@biologycarol Okay thank you very much for this information I kind of got side tracked and ended up digging too deep on the structure of the carbohydrates hehe x But thank you very much for taking your time to clarify this for me!!
I am looking into whether I can WJEC/Eduqas have a decent exam question selection tool. I can't find anything obvious on the website(s) and have just emailed them. Without that online tool, it is very difficult to understand and therefore advise specifically for your exam board. I can't advertise links to an exam board unless I'm confident that I'm delivering a reliable service. There's the problem!
biology carol Hey what do you mean by exam selection tool. If you mean getting a set of topic questions then yeah I understand what you mean there website tool is really rubbish. However, I do have questions set based on topics if that would be any use ❤️
ahhh this is so useful to revise for my unit test...super to the point with all the detail you need for exam Qs. Your channel is definitely going to help through my a levels
Woo! Hoo! Delighted😊
I have just enrolled in OSC A-Level Biology, chemistry and physics and I think you are going to be my new best friend. If only there was a Chemistry Carol and a Physics Carol too! Let the learning commence!
Sorry for the late reply! Delighted that I might be useful - do have a look at my website www.biologycarol.co.uk which has all my videos (properly made and edited!) each one with exam questions gone through at the end. this might be a really useful resource for you. its my genuine attempt to make a level biology accessible to all students regardless of income.
Suss out Eliot Rintoul for A level chemistry - he gets great reviews! I'm afraid I don't have a recommendation for Physics though 🙁 Please let me know if you find one!!
All the VERY best x
From an 'older' student doing an online HE course, your videos make a very welcome change from reading reference books. You really bring the topic alive. thank you
Thank you! Being a social media novice, I have been constantly amazed (and hugely encouraged) by the comments I've received. Thank you again!
Thank you! Being a social media novice, I have been constantly amazed (and hugely encouraged) by the comments I've received. Thank you again!
THANK YOU I am learning this in quarantine and it is very helpful
I am SO pleased I am able to help - thanks for the encouragement!
pro trick : you can watch movies at Kaldrostream. Been using it for watching lots of of movies recently.
@Ezra Joe yup, I've been watching on Kaldrostream for since december myself =)
Just started my biology a-level and have exams next week, this was extremely useful thank you :)
Delighted!
do you go to ews
Hey Carol! This is amazing! Im doing a second round of AS-Bio (edexcel), as the first time round was a disaster. You explaining what the examiners want to read really helps! Will definitely stick around for more, hoping it will help for January 2020. Is there a video on the properties of water? I also have a suggestion: would it be possible for you to take a Past Paper (eg. edexcel) and go through some questions, together with the mark scheme, so we have an idea on how to answer them correctly? I myself really have trouble wording my answers, and the Markscheme only mentions the correct words/ "idea of xy".. so I lose marks, eventhough what I said was technically correct.. Keep up the great work!
So sorry, TH-cam has not notified me of any comments hence this very late response 😬
So sorry I didn't see this! Yes - there is a water video and it makes clear exactly what you need to know for each exam board.
Thank you Carol! I really enjoyed the way you explained this it was very useful :)
this is so helpful, thankyou! so clear and straight to the point x
Fantastic Bella! DElighted to hear it 😊
If this has been helpful you might be interested in taking a look at my website where I have my full complement of AS biology videos on offer for £25 for a year's subscription (or both years' for £50 for a year). There's a freebie on there 'How to improve your grade up to an A*' so might be worth taking a look 😊 www.biologycarol.co.uk
I cannot thank you enough :))
Very clear, Very straightforward!
SO pleased it’s helped xx
Hi can you do a video on a level biology on the topic of cells function of how u identify rough endoplasmic reticulum, the golgi body basically all the functions and structures of prokaryotic and eurokaryrtic cells. Basically what they have similar and different in them. But this video was so helpful I watched this first then go through my textbooks makes everything easier. Continue what u are doing it's great.
It's in the pipeline, but in the meantime:
RER - looks ROUGH because of the bumpy ribosomes (little dots) on the outside (literally why it was named that, when first sighted down an electron microscope).
SER - SMOOTH version of RER because no ribosomes.
RER and SER are the underground tube systems of the cell - they TRANSPORT. RER - transports proteins because ribosomes make them. SER transports the other 2 main molecules - fats and carbs. Both RER and SER 'layers' are always JOINED by little 'membrane bridges'. on the other hand...
Golgi always looks like a stack of plates - NO 'membrane bridges'. The proteins made by the RER are budded off into vesicles (the cell's little suitcases - they transport bundles of stuff) and are taken to the Golgi which modifies and packages (THE words to use in an exam) the proteins by adding things like a bit of carb to them (to make a GLYCOprotein) or a bit of lipid (to make a LIPOprotein). Once the Golgi has done its job, it buds of vesicles full of 'finished' protein and transports them either to other parts of the cell or out of the cell (the vesicle FUSES with the cell membrane to release contents = exocytosis). Hope that helps...xx
your videos are very helpful! i couldn't thank you enough! Could you please do a video on plant structure and fibers? i find trouble in learning them (edexcel board) .
Thank you! I will add the topic to me list and do my best!
@@biologycarol thank you very much Ms Carol!
Great video Carol! May I kindly ask for AQA do we need to know about amylopectin??
No. The details about amylose will be where you earn the marks. (Amylopectin details are required by many other syllabuses, so handy to know it exists, if doing biology- related uni course)
thank you so so much for the detailed explanation! ❤
You're so welcome!
this is great, thank you ❤️
Thank you for the encouragement 😊. Sorry - I missed your comment previously (I'm a bit rubbish at this TH-cam thing...)
thank you so much this will help me in my mock eXAM!!!
All the VERY best!
Feel free to check out my website www.biologycarol.co.uk where my FULL complement of videos (all with exam questions) live 😊. Download the 'How to improve my grade up to an A*' at least! This website is all about me trying to make A level biology accessible to students, regardless of their family income x
Hello miss! I am really struggling with the bio molecules chapter, would you be so kind as to make a video on it
Hi Kazi,
Sorry for the belated response - I've been away 😊
I've done ones on lipids and proteins as well as carbs and they are all on my website www.biologycarol.co.uk. Because TH-cam pays very little with a 'niche' 10K subscribers I have the whole A level course of videos on the website for which I charge, I hope you will agree, a pretty small amount for a year's subscription (£50 if you just need Yr12). You can earn the cost back with 10% commission on any friends' purchases, and there's a freebie - How to improve your grade up to an A* - so worth having a look, I hope!
My genuine aim is to make A level biology accessible to all students, regardless of family income.
Please make the private videos public
Your videos are so helpful
My good wishes with you ma'am❤️
Do feel free to check out my website where ALL my videos are (covering whole of AQA and OCR A syllabuses by end Jan) - www.biologycarol.co.uk. This is me seriously trying to make A level biology accessible to all students regardless of family income...
thanks carol
Delighted it was useful!
Hi biology carol, I am Kenneth, a CIE A Level student from Malaysia, I have just started my programme this January 2020,I came across your channel because of Unjaded jade. I find your videos amazingly good as it is very straightforward and well articulated. However it would be so much better if you could include CIE A level’s syllabus and too, more common mistakes made by students in your upcoming videos. But anyway, it has helped me a lot and once again, thank you so much. Besides, could you explain more on how glucose turned into ring form instead of being in a chain form? Thank you so much.
Hi! I would love to be able to cover every syllabus! I’d rather do fewer well than more badly. Thank you for the comment about common mistakes - I will definitely bear that in mind with future videos. Thank you!
why are the other videos in the playlist private?
Hi!
Because the FULL full full set of videos that covers the whole of the AQA and OCR A syllabuses are now available on my website for (what I hope you'll agree) the very reasonable price of £50 for a years subscription. That's the cost of 1-2 hours of private tuition for the WHOLE COURSE! Even with 8.3K subscribers TH-cam pays me about £20/MONTH which simply isn't enough for me to keep doing this.
I'm passionate about making A level biology accessible to students regardless of their family income so you can earn your subscription cost back by earning 10% commission on friends' purchases. Hope this makes sense to you.
AND there's a freebie on the website (how to get up to an A*) so do have a sneaky peak and grab that!
Really good
Thank you!
Do feel free to check out my website where ALL my videos are (covering whole of AQA and OCR A syllabuses by end Jan) - www.biologycarol.co.uk. This is me seriously trying to make A level biology accessible to all students regardless of family income...
Also what exam board do you use for your videos?!
Primarily aqa and ocr because most take those exams. However when I can I try and make clear what other exam boards require.
Is Lactose made from alpha glucose and galactose because in another video I saw it was made from beta glucose and galactose.
For the sake of a level you only need to know its glucose and galactose. I’m 90+% sure it’s alpha glucose as only alpha can be used in respiration.
@@biologycarol ok thank you
Hey Carol! In this video I realised u write something after doesn't effect when talking about the water potential. I am quiet confused what that is.
Can you give me a time stamp or a bit more info on where in the video i say something confusing? Thanks
@@biologycarol 12:30 (its after the word effect)
@@HA-kb1xj That's the Greek letter psi which stands for water potential. If the water potential isn't affected, it means that water will not be gained or lost from the cell as a result of osmosis (the definition of osmosis is the net movement of water from higher to lower water potential through a semi-permeable membrane - does that sound familiar
Thank you! Cellulose is incl in edexcel but not chitin.
I’m really confused with the cellulose section of the video, what does it mean when you say that the beta glucose rotates 180 degrees. Your videos are very helpful and you explain the topics really well.
Thanks for the Q Aneesa and I'm sorry it wasn't clear🙁
Beta glucose has its OH groups diagonally opposite each other (alpha glucose has them both at the bottom). Because of this, so that the OH groups can align to form glycosidic bonds in the beta glucose polysaccharide (cellulose), alternate (every other) beta glucose in cellulose, flips through 180 degrees (literally rotates so that the top of the molecule is on the bottom and the bottom of the molecule is on the top). This means that the OH groups are now next to each other to make the glycosidic bonds. this, in turn means that the molecule ends up being linear (straight line) rather than helical as in amylose (starch molecule, the polysaccharide of alpha glucose). This in turn allows many cellulose molecules to stack up next to each other and form H bonds between them, which forms the microfibrils. These mesh together to form the cellulose cell wall which is strong enough to stop the plant cell bursting when its packed full of water. Does that help? Come back to me if not x
@@biologycarol THANK YOU, this helped me so much. The video was extremely useful and explained the topic very clearly, I just found that part of the topic hard, Thank you, I now fully understand the topic.
Thank YOU so much - that's really encouraging 😊
If you like what I do, take a look at my website www.biologycarol.co.uk. There's a freebie on there - my totally updated video on 'How to improve you grade to an A*' - so do grab that!
For a really quick explanation about my website and videos do take a look at my channel trailer th-cam.com/video/7sfl8_aAWk0/w-d-xo.html
Just so you know...
INTRODUCTORY OFFERS!
£25 would buy you a year's subscription to ALL my AS videos ( the cost of 1/2 hour of private tuition) PLUS 25% next year's subscription when you'll need access to ALL the videos.
£50 would buy you a year's subscription to ALL videos (the cost of 1 hour of private tuition)
AND if you buy either of these you get the opportunity to earn 10% commission on any of your friends' purchases (using a personalised link that you can share). You could end up making a profit on subscribing!
This is me seriously trying to make A level biology accessible to all students, regardless of family income - there's my goal😁
biology carol That sounds amazing, I’ll be sure to check that out, I will say I love how you aren’t doing this for TH-cam but because you genuinely care and have a passion for biology, everyone needs to know who you are !!
@@aneesakahn7728 You are lovely! Feel free to subscribe to a 'bundle' of videos and then make a huge profit by getting a load of friends to subscribe too😂😂😂. Or just spread the word about this channel (and all the Livestreams - the bottom line is that students who need help should get it - not just those who have a load of money!!
do you have videos on lipids?
LOVE the name 😁
Yes, I do 😊 The full set of Yr 12 & Yr 13 videos is on my website www.biologycarol.co.uk andis available for a year's subscription for £50. Just Yr 12 stuff is £25 for the year AND for both subscriptions you get the opportunity to earn 10% commission on any of your friends' purchases - you could end up making a profit! This is me making a very serious effort to make A level biology accessible to all regardless of family income...
Take a look at my new channel trailer for the full 'story'! th-cam.com/video/7sfl8_aAWk0/w-d-xo.html
@@biologycarol It says that the subscriptions are recurring so do I have to pay again
@@lacerav5818 No! 😁 You get instructed, as soon as you've paid to cancel the annual subscription (and i send you another email to remind you, just in case!). I know you only need to subscribe for a year, but the selling platform I'm using only allows recurring subscription - hence my instructions to you to cancel once you've paid for the 1 and only year you need. Hope that makes sense. I've now made the website even clearer regarding this so thank you for raising it x
THANK YOUUUUUUU x
Pleasure!
Soooo goooddddd
Thank you SO much! Really pleased it helped 😊
If you're struggling with any other topics you might want to quickly check out my website www.biologycarol.co.uk where I have all my videos available for a VERY small yearly subscription (£50 for Yr 12 and 13 topics and £25 for Yr 12 only). Sadly, I have to charge something - I earn
Isn't there supposed to be a hydrogen on the inside C5 of both glucoses?? 4:00
Yes! there should also be H and OH groups on the C2 and C3 but I don't put any of them on because the things you HAVE to know at A level is the relative position of the H and OH groups on C1 & C4 for alpha and beta glucose. I have used the AQA A level syllabus (slightly dodgy) structural diagram for alpha and beta glucose. I thought i made a reference to the fact that the diagrams are not 'chemistry perfect' but focus on what A level biologists need to know, but I can't remember exactly now tbh!
Does that make more sense?
Ok I understand, but I made the mistake in a question and my teacher said my diagram Had to be perfect. I do OCR bio though
@@brummiesteve2174 Fair comment. I'm intrigued as I haven't come across an OCR exam question that requires the full displayed formula for alpha or beta glucose from memory (ie without giving you the full displayed formula of one of them on the paper). If it's a past exam question, any chance of you taking a photo of the Q and mark scheme and sending it to me at biologycarol@outlook.com??!
you are AWESOME!!!
Right back atcha!
Sorry, I didn’t get notified if your comment hence the late response😬
thank youuuu :D
Just so you know - I've a full collection of A level biology videos on my website www.biologycarol.co.uk
For a really quick explanation about my website and videos spend 2 minutes watching my channel trailer! th-cam.com/video/7sfl8_aAWk0/w-d-xo.html
Just so you know...
INTRODUCTORY OFFERS!
£25 would buy you a year's subscription to ALL my AS videos ( the cost of 1/2 hour of private tuition) PLUS 25% next year's subscription when you'll need access to ALL the videos.
£50 would buy you a year's subscription to ALL videos (the cost of 1 hour of private tuition)
AND if you buy either of these you get the opportunity to earn 10% commission on any of your friends' purchases (using a personalised link that you can share). You could end up making a profit on subscribing!
This is me seriously trying to make A level biology accessible to all students, regardless of family income - there's my goal😁
shouldn't maltose be made up of 1 beta glucose, and 1 alpha glucose,,,, instead of 2 alpha glucose molecules???
It's 2 alpha glucoses, not 1 alpha, 1 beta. So say the Royal Society of Chemistry, so it must be true!!
@@biologycarol oh okay, thank you !
@@biologycarol
I have asked my biology teachers, and he has comfirmed that there are indeed two different forms of maltose, there can be both an alpha and a beta form so b+a and a+a
@@aftina.hn.4369 OK - happy to accept that. However, for your A level biology you aren't actually REQUIRED to know about a and b glucose except that a glucose makes up starch and glycogen and b glucose makes up cellulose. For the disaccharides, you just have to know the monomer's names not which stereoisomers are involved.
@@biologycarol Okay thank you very much for this information
I kind of got side tracked and ended up digging too deep on the structure of the carbohydrates hehe x
But thank you very much for taking your time to clarify this for me!!
Hey love your videos 🥰🥰 Thankyou ❤️❤️ Could you please also link it to WJEC EDUQAS as there are literally no resources for it xx
I am looking into whether I can WJEC/Eduqas have a decent exam question selection tool. I can't find anything obvious on the website(s) and have just emailed them. Without that online tool, it is very difficult to understand and therefore advise specifically for your exam board. I can't advertise links to an exam board unless I'm confident that I'm delivering a reliable service. There's the problem!
biology carol Hey what do you mean by exam selection tool. If you mean getting a set of topic questions then yeah I understand what you mean there website tool is really rubbish. However, I do have questions set based on topics if that would be any use ❤️