Praise God for His creation! The universe and its contents are amazing and as Catholics we believe the Lord made them. This thread is to praise Him for the life-sustaining molecules of DNA and proteins.
I admire one of His greatest creations, physical life. It is way above genius that He came up with the idea of DNA and proteins and how He got them working together in their extreme complexity. In nature atoms and molecules (collections of atoms) move and react in certain ways, They can combine with each other and interact to carry out chemical reactions, but they can also come apart or clump depending on various factors. God has put together atoms and molecules in a way that biological life can function. This gets down to the cell, the basic unit of life.
Each human has trillions of cells which have different kinds of molecules. Two major molecules are DNA and proteins. These go hand in hand, with DNA used as a code to copy instructions for making proteins which in turn do many different jobs, like using food for energy. DNA and proteins depend on the numbers, properties and arrangements of their atoms for function.
The molecule DNA is not considered a protein but carries our genes, which are used as a code to make the proteins. The DNA double helix structure was discovered in the 1950’s by Franklin, Watson and Crick. It is in almost every living cell from one-celled creatures to the trillions in human beings.
As an aside, it is not necessary to know the what the “DNA” letter abbreviations stand for to appreciate them, but you can go to the first Wikipedia link at the bottom of the post if you want more detail. Though Wikipedia articles are often not considered academically complete, they have much information and many good visuals. Also, they list references and further reading at the bottom which are journal articles, texts and the like.
This unusually detailed image of a section of DNA comes from Wikipedia (below link to “DNA”). The picture is notable for showing the precise placement of atoms, named in the upper right corner, in the DNA structure.
The alignment of atoms is made up of sub-structures (themselves molecules) that are necessary for function. In humans, in almost every cell there are about 3.2 billion links, called base pairs, shown in the bottom right corner in the DNA molecule image. The letters T, A, C, and G stand for the 4 molecules that make up the genetic code by their specific placements within the DNA. The pairs come apart in the middle when the DNA is copied by proteins in order to make other proteins and more DNA. This exposes a single base of the pair for copying and it continues down the line of one side of the strand of DNA for the required length.
Here is a link for the image information (by Zephyris, licensed under Creative Commons Attribution-Share Alike 3.0 Unported license):