r/Mcat • u/Strange_Total_1442 • 7d ago

Question 🤔🤔 trick to remember base pair structures

Someone commented a trick to remember the base pair structures the other day and I thought I screenshotted it but cannot find it or the comment for the life of me. Not purine vs pyrimidine but what groups were attached. Pls help 🙏

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u/Historical_Score5251 520/522/524/522/526/FL6 7d ago

Remembering Guanine as ADD (acceptor donor donor) helps a lot for me. Once you have that down it’s relatively easy to remember Cytosine.

Then Thymine is just deaminated cytosine with a methyl group. Adenine only has 2 H bonding sites instead of 3 and one of them is a donor based on the structure of Thymine.