GCSE Chemistry - Naturally Occurring Polymers - Polypeptides, DNA, and Carbohydrates #61

This video covers:
- Examples of polymers that occur naturally, including:
- Polypeptides, which are made of amino acids
- DNA, which is made of nucleotides
- Carbohydrates, which are made of sugars
- How the monomers combine to form the polymers through condensation reactions

Exam board specific info:
AQA - Separate/triple science only, and mostly higher tier
IGCSE Edexcel - Not in your course
Edexcel - Separate/triple science only
OCR 21st Century - Separate/triple science only
OCR Gateway - Separate/triple science only

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GCSE Chemistry playlist:

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GCSE Physics Playlist:

[ekaterinakeyn]

OMG i cant stress how absolutly brilliantly you explain.
Reccommend to everyone.
Just wish you had something for English GCSE. :)

[vt.physics]

Another great vid! I love your style. Not many science channels out there like yours.

[screenedmachine]

genuinely a life-saver, thank you for all your hard-work!

[aryans]

Just one note: An amide link/bond is the bond between the hydroxyl group in the carboxyl group of one molecule and the amino group in another molecule. A peptide link is a specific type of amide bond that occurs between amino acids links, which holds together polypeptides.

[aisha-uozs]

you guys are the best gcse vídeos out there! please never stop!

[xxelxx]

I’m In year 8 and we’re doing this! so even tho it’s a video for GCSE it’s helpful for me so thanks!

[liamjones]

this was sooo useful thank you! im pretty sure youre the king of saving us private candidates

[taiwobrown]

Just one thing to note that then NH2 end of the amino acid is an amine not amino

[ibeasy]

hello, love your videos:) it would be great if youcould start including if the given thing is also in cie igcse course

[oscarguinane]

Very well explained, I found this video while trying to find another video on forming amino acids with an impact test - is that actually possible?

[ahamayoisac]

I never agreed with the definition of polymer applied to DNA. Polymer by definition is a chain of identical molecules (monomers). DNA is not it. The backbone is, no argument but not the actual DNA molecule. Think about it, the basepairs are a code and never really repeat. Thats the whole point.

[jomassey]

Can any of these natural polymers be used post surgery to reduce adhesions?

[Cognitoedu]

- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
- Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on.
- Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like.
- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
- A comprehensive bank of past exam papers, organised both by year, and also by topic.

Amadeus & Tom

[sushmii]

you have no idea how much this helped, tysm for this video!

[hunainitis]

I remember watching your video 2-3 years back for my O Level Exams and here I'm again watching you one day before my 12th Chemistry Exam, Thank you so much for all the work that you've put in, It's so so so helpful that I cannot even describe. Tysfm ❤