Nucleic Acids. 2 Types DNA- deoxyribonucleic acid RNA- ribonucleic acid What do they do? Contain genetic information . DNA. Exists as double helix- like a spiral staircase Encodes cells protein sequences Exists in our cells in compact segments called chromosomes. RNA.
Nucleic Acids • 2 Types • DNA- deoxyribonucleic acid • RNA- ribonucleic acid • What do they do? • Contain genetic information
DNA • Exists as double helix- like a spiral staircase • Encodes cells protein sequences • Exists in our cells in compact segments called chromosomes
RNA • Three different types of RNA for different purposes(will discuss in later unit) • Makes working copies of genes • Genes dictate what amino acids are needed to make a certain protein
What are nucleic acids made of? • Subunits (monomers)are called nucleotides • nucleotides are made of 3 parts • 1. Phosphate group (PO4) • 2. Sugar • 3. Nitrogen Containing Base
Bases • 2 groups • Purines- larger bases • Adenine • Guanine • Pyrimidines- smaller bases • Thymine • Cytosine
Bases • Adenine always pairs up with Thymine and vice versa • Guanine and Cytosine always pair together