Presentation on theme: "Nucleic Acids Not considered a nutrient macromolecule"— Presentation transcript:
1 Nucleic Acids Not considered a nutrient macromolecule They are complex compounds thatdetermine how the cell functions andwhat characteristics it has.
2 Nucleic Acids There are two types of nucleic acids: DNA (deoxyribonucleic acid)Determines the heredity of the cell“double helix” 2 chains of nucleic acidsRNA (ribonucleic acid)Active in making proteins for the cellA single chain of nucleic acidsMade from DNA (in the nucleus) and acts as a messenger to provide information in the cell
3 Structure of Nucleic Acids Nucleic acids are polymers- a polymer is a long chain made up of repeating structural units – just like carbs/proteins/lipidsThe structural unit (building block) for a nucleic acid is called a nucleotide.
4 Nucleotides Nucleic acids consist of nucleotides made up of: Nitrogen baseSugar moleculePhosphate groupYoutube Video
5 Structure of DNA DNA has the following 4 nitrogen bases: Adenine CytosineGuanineThymine
6 Complementary Base Pairs Two H bonds for A-TThree H bonds for G-C
8 Structure of RNA RNA has the following 4 nitrogen bases: Adenine CytosineGuanineUracil
9 Learning CheckWrite the complementary base sequence for the matching strand in the following DNA section:-G-A-G-C-T-A-T-T-C-G-A-• • • • • • • • • •
10 Solution NA1Write the complementary base sequence for the matching strand in the following DNA section: -G-A-G-C-T-A-T-T-C-G-A • • • • • • • • • • -C-T-C-G-A-T-A-A-G-C-T
11 DNA ReplicationDNA in the chromosomes replicates itself every cell divisionMaintains correct genetic informationTwo strands of DNA unwindEach strand acts like a templateNew bases pair with their complementary baseTwo double helixes form that are copies of original DNA
13 DNA Copied with Base Pairs Two copies of original DNA strand G-C G-C A-T A-T C-G C-G T-A G-A
14 Protein ProductionDNA “codes” for genetic information including protein structures.DNA unwinds and an RNA strand is formed.RNA is free to travel in the cell (to ribosomes)Ribosomes read the “code” and arrange amino acids in the specific sequence required.