this is really good, i’ve just started watching all your videos and they are all super clear and consise - super glad i stumbled across your channel! i take advanced biology in school but the professor does talk very fast and i can’t catch up sometimes. these videos clarified all my doubts, thank you so much! ❤️
Thanks you so much for this, I’m writing notes in preparation for my exam in May and when looking through my book it wasn’t making much sense, but just having someone clearly talk through the information and the visuals really helped
Thank you for this, I had been neglectful of solidifying the facts about these molecules so kept missing the single markers or multiple choice simple ones, but now I've got these clear in my mind thanks to this great, concise video!
thanks! i blurted out the table, and I have found my areas of weaknesses, so active recall can further supplement my study of polysaccharides. Alpha glucose is crucial for providing me with energy for my draining 6th form era haha
Very helpful. I came here trying to learn more about the polysaccharides that make up the chitin in the exoskeleton of ants. So, with gratitude, we add your knowledge to our continuing education. --- Thanks for the great upload. ---
I was wondering whether we need to know whether it is a 1-6 glycosidic bond or 1-4 glycosidic bond. Because in lesson my teacher briefly mentioned that we don’t know need to know whether it’s 1-4 or 1-6. Would you say it’s better to learn it or is it not in the spec? ( I am doing aqa bio)
Hi, just wondering.... when u said "starch is formed from 2 polymers of alpha glucose" should it not be it is formed from 2 'monomers' of alpha glucose
@@MissEstruchBiology that makes more sense! Thank you (just to let you know these videos are so good and i really appreciate these..... your amazing! )
Hi just wondering if we don't need to know that with cellulose to form a glycosidic bond one of the beta monomers need to rotate 180 degrees to form the bond
Hi Miss, I don’t get what you mean by how the structures being insoluble mean it won’t affect water potential. Could you explain that to me further. Thank you 😊
have you learnt osmosis yet at A level? You need to know about water potential first. Because it doesn't dissolve, it doesn't affect the concentration (or water potential) of the cytoplasm so it won't have an impact on osmosis.
Hi Suzi, Digestion is the breakdown (hydrolysis) of polysaccharides into smaller soluble carbohydrates so they can be absorbed. Once absorbed they can be converted back into polysaccharides if needed, e.g if too much glucose on the blood it is converted to glycogen. I'm not certain if that's what you meant,but hopefully it helps 🤞
How is starch insoluble in water if it can undergo hydrolysis and break down into the glucose monosaccharides? Surely this would mean that then the glucose dissolves in the water meaning it is soluble? Hope im not being dumb sorry
Hey, starch is insoluble because it is so large and all the glucose molecules are held in place by glycosidic bonds. Once it is hydrolysed it is no longer starch, it is glucose, and glucose is soluble. Hope that helps clarify
I have recently started a lvl bio a couple weeks ago, and your videos have helped so much with consolidating content. thank you so much :))!
you're so welcome 😁 So pleased they help! Exactly what I made them for.
So what did get
What did you get in your a levels
this is really good, i’ve just started watching all your videos and they are all super clear and consise - super glad i stumbled across your channel! i take advanced biology in school but the professor does talk very fast and i can’t catch up sometimes. these videos clarified all my doubts, thank you so much! ❤️
So glad you like them! I hope they continue to help you 😁😁
Thanks you so much for this, I’m writing notes in preparation for my exam in May and when looking through my book it wasn’t making much sense, but just having someone clearly talk through the information and the visuals really helped
Thank you for this, I had been neglectful of solidifying the facts about these molecules so kept missing the single markers or multiple choice simple ones, but now I've got these clear in my mind thanks to this great, concise video!
That's great! I'm so happy it's helped you. Good luck!
thanks! i blurted out the table, and I have found my areas of weaknesses, so active recall can further supplement my study of polysaccharides.
Alpha glucose is crucial for providing me with energy for my draining 6th form era haha
haha yes love it 🙌🙌🙌 That alpha glucose is SO essential
@@MissEstruchBiology haha, thanks!
Fantastic video my teacher just speaks and is confusing so this cleared things up alot.
glad it helped 😊
Very helpful. I came here trying to learn more about the polysaccharides that make up the
chitin in the exoskeleton of ants. So, with gratitude, we add your knowledge to our continuing education.
--- Thanks for the great upload. ---
This is really good and simpler to understand
So glad you found it easy to understand 😊
Congratulations!!
Thanks, not sure what for 😄
Thank you soooo much♡
you're welcome 😊
I love your videos
thank you!!! Really hope they help
I was wondering whether we need to know whether it is a 1-6 glycosidic bond or 1-4 glycosidic bond. Because in lesson my teacher briefly mentioned that we don’t know need to know whether it’s 1-4 or 1-6. Would you say it’s better to learn it or is it not in the spec? ( I am doing aqa bio)
you DO need to know this for the polysaccharides, but you don't for disaccharides. Hope that helps
Hi, just wondering.... when u said "starch is formed from 2 polymers of alpha glucose" should it not be it is formed from 2 'monomers' of alpha glucose
Btw, the timestamp for when it is said it at 1.36
hey. No it is 2 polymers, amylopetion polymer and amylose polymer.
@@MissEstruchBiology that makes more sense! Thank you (just to let you know these videos are so good and i really appreciate these..... your amazing! )
Hey, do we have to know specifically about collagen because i keep finding exam questions about it but I can’t find it on the spec. Thank youu
Hello, no not for AQA. They must be application or old spec questions 😊
@@MissEstruchBiology thank you. I’m so glad because I was worrying that I haven’t been taught it lol
Thank you teacher 🥰🥰
You are so welcome 😊
Hi just wondering if we don't need to know that with cellulose to form a glycosidic bond one of the beta monomers need to rotate 180 degrees to form the bond
yeah, this comes up in the mark scheme
Thank you so so much ❤
You're very welcome. Really hope it helps you 😊
Hi Miss, I don’t get what you mean by how the structures being insoluble mean it won’t affect water potential. Could you explain that to me further. Thank you 😊
have you learnt osmosis yet at A level? You need to know about water potential first.
Because it doesn't dissolve, it doesn't affect the concentration (or water potential) of the cytoplasm so it won't have an impact on osmosis.
@@MissEstruchBiology no I haven’t learnt osmosis yet
Nice video.Can I access the notes the content in the video us a bit unclear
I have two options
I have the PowerPoints for sale on my website or I have my A level notes missestruch.co.uk/shop-2/
But in metabolism when the bonds are broken and formed what happens to the carbohydrates? I mean which are broken by polar?
Hi Suzi,
Digestion is the breakdown (hydrolysis) of polysaccharides into smaller soluble carbohydrates so they can be absorbed. Once absorbed they can be converted back into polysaccharides if needed, e.g if too much glucose on the blood it is converted to glycogen.
I'm not certain if that's what you meant,but hopefully it helps 🤞
thanks
You're welcome!
These are so useufl
I'm so pleased 😁😁😁
can i watch your videos if i take AS level cie?
Hello,
There will be a lot of overlaps, but I suggest checking your specification when watching the videos to compare exactly what you need to know.
Hey, the website for the practice questions don’t work
Hey I've updated the link and it is also here missestruch.co.uk/
why cant we have good revision resources for edexcel?????????????/
Hello,
I teach AQA and started this channel for my students at first, but now its grown I plan to cover more specs 😊
there is a lot of overlap though.
hi i do ocr level biology do you think i should still revise using your channel? thnaks. ps: i love your videos
there is a lot of overlap and all my study tips would be relevant.. BioRach is also great for OCR bio
How is starch insoluble in water if it can undergo hydrolysis and break down into the glucose monosaccharides? Surely this would mean that then the glucose dissolves in the water meaning it is soluble?
Hope im not being dumb sorry
Hey, starch is insoluble because it is so large and all the glucose molecules are held in place by glycosidic bonds.
Once it is hydrolysed it is no longer starch, it is glucose, and glucose is soluble. Hope that helps clarify
cheers