DNA structure and function for A-level Biology. Nucleotide monomer and polynucleotide polymer

Learn the structure of DNA nucleotides and how these bond together to form the DNA polymer and double helix. Learn how this structure and the bonds involved result in the properties of DNA.

For past paper questions linked to this topic click these links.

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[adamrose]

I’m literally going to watch all your videos before I sit my A2 exams. I’m so glad I found your YouTube channel because you explain everything so clearly and concisely which makes it so much easier for me to understand all the topics. You’re a legend Miss Estruch!

[Angela-gscp]

Your videos are honestly so helpful. Thank you!

[athenaraptor]

This video is really helpful and clear :)

[totow]

Hi your videos are so so helpful, thank you! Do we need to know about purines and pyrimidines? I can’t find them on the spec but was taught about them in class.

[anasmohamed]

I don’t get why the phosphodiester bond is represented as one (bold blue) line if it’s actually 2 lines (2 ester bonds)?

[oliviaglanville]

I was taught about purines and pyrimidines but can't find this on the spec - should I still learn it? Great videos by the way :)

[sh]

Thank you, your videos are really good

[omaralakaidi]

Hi love the videos was wondering if you've finished the videos for Topic 1?

[louisexxxxasasasa]

Is the condensation reaction to form a polynucleotide between the the deoxyribose sugar of 1 nucleotide + the phosphate group of another separate nucleotide? Thanks

[saniyasiddeka]

Do we need to know about how DNA strands are anti parallel

[areebahaque]

Miss I wanna email you can you provide your email address.Also please make videos for Edexcel as well