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Nucleic Acids nucleic acids store and transmit hereditary information

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Presentation on theme: "Nucleic Acids nucleic acids store and transmit hereditary information"— Presentation transcript:

1 Nucleic Acids nucleic acids store and transmit hereditary information
Contain the following elements: C, H, N, O, P Two types of nucleic acids: DNA RNA

2 1. DNA = Deoxyribonucleic acid
“encodes the instructions”(genetic code) for the specific amino acid sequence of a protein is copied and passed from one generation of cells to another (condensed DNA = chromosome) Eukaryotes- nucleus Prokaryotes- cytoplasm

3 2. RNA = Ribonucleic acid functions in the actual
synthesis of proteins coded for by DNA mRNA

4 DNA ==> RNA ==> Protein
mRNA carries the encoded information to the ribosomes; tRNA carries the amino acids to the ribosome; & rRNA is a major component of ribosomes DNA ==> RNA ==> Protein

5 Structure of Nucleic Acids
Nucleic acids are macromolecules built of monomers called NUCLEOTIDES

6 Each nucleotide consists of: 1. 5-carbon sugar: -deoxyribose in DNA
-ribose in RNA 2.   Phosphate group (attached to #5 carbon on sugar) 3.   Nitrogenous base purines (double ring; A & G) pyrimidines (single ring; C, T & U)

7 nucleotides are joined together by phosphodiester linkages (between phosphate of one nucleotide and the sugar of the next) this results in a backbone with a repeating pattern of: sugar-phosphate-sugar-phosphate... 7

8 Dehydration Synthesis

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