Key Area 2
(a) Structure of DNA
In this first section, you will look at the structure of DNA. You should complete the "Something to Read" section and then choose at least 1 other task to complement your at-home learning.
Something to Read...
Open the document below and read the mandatory course notes provided by SQA for this Key Area. You may wish to use your home learning time to copy these notes into a jotter or choose a digital presentation format that suits your learning style.
Something to Watch...
Click on the white button below to watch the CRASH course biology video on DNA Structure by Hank Green. Watch from the beginning until about 6minutes. We will continue with this video when we move onto DNA replication in the next section.
Something to look at...
Look at the following diagrams of DNA below. Try to replicate these images in your own notes. Can you label each section mentioned in your notes? The nucleotides (deoxyribose sugar, base and phosphate), the sugar phosphate backbone, the hydrogen bonds? Can you identify why we say it is a double-stranded, anti-parallel structure?
You are now ready for your in-class lesson on the structure of DNA. Remember to bring any questions or queries with you.
Click here if you are ready to move onto Replication of DNA.
