Biology HL
Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme A - Unity & diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme A - Unity & diversity
Biology HL
Biology HL

Theme A - Unity & diversity

Unlock DNA's Secrets: Purine-Pyrimidine Bonding

Word Count Emoji
432 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

Nitrogenous bases - the building blocks of DNA

DNA is like the instruction manual of life, containing the information needed to build and maintain our bodies. It's made up of two primary kinds of nitrogenous bases: purines and pyrimidines.

Purines

  • Adenine (A) and Guanine (G)
  • Have two rings of atoms.
  • Real-world example: Think of purines like a bicycle with two wheels. It's more stable and strong!

Pyrimidines

  • Cytosine (C) and Thymine (T)
  • Have only one ring of atoms.
  • Real-world example: Pyrimidines are like unicycles, having just one wheel. Still cool, but a different structure altogether!

Base pairing - the DNA love connection

In the DNA world, opposites attract! Each base pair consists of one purine and one pyrimidine, making a perfect connection.

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IB Resources
Theme A - Unity & diversity
Biology HL
Biology HL

Theme A - Unity & diversity

Unlock DNA's Secrets: Purine-Pyrimidine Bonding

Word Count Emoji
432 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

Nitrogenous bases - the building blocks of DNA

DNA is like the instruction manual of life, containing the information needed to build and maintain our bodies. It's made up of two primary kinds of nitrogenous bases: purines and pyrimidines.

Purines

  • Adenine (A) and Guanine (G)
  • Have two rings of atoms.
  • Real-world example: Think of purines like a bicycle with two wheels. It's more stable and strong!

Pyrimidines

  • Cytosine (C) and Thymine (T)
  • Have only one ring of atoms.
  • Real-world example: Pyrimidines are like unicycles, having just one wheel. Still cool, but a different structure altogether!

Base pairing - the DNA love connection

In the DNA world, opposites attract! Each base pair consists of one purine and one pyrimidine, making a perfect connection.

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟