Nucleic Acid

Nucleic Acids• Examples:– RNA (ribonucleic acid)• single helix

– DNA (deoxyribonucleic acid)• double helix

• Structure:– monomers = nucleotides

RNADNA

proteinsproteins

DNADNA

Nucleic Acids• Function:– genetic material• stores information–genes–blueprint for building proteins»DNA RNA proteins

• transfers information–blueprint for new cells–blueprint for next generation

AA

A

A

TC

G

CG

TG

C

T

Genes (DNA)are needed to run bodies every day…to make you and me…to make new cells…to make babies!

Nucleic acids

•Building block =nucleotides

Nucleotides are made of 3 parts Phosphate group, sugar , and nitrogen base

5 different nucleotides different nitrogen bases A, T, C, G, U

nucleotide – nucleotide – nucleotide – nucleotide

phosphate

sugar N base

Nitrogen basesI’m the A,T,C,G or Upart!

Nucleotide chains• Nucleic acids nucleotides chained into a polymerDeoxyribonucleic acid (DNA Structure)

- Double (two) strands- Double helix - Nucleotides : Adenine (A)

Thymine (T)Guanine (G)Cytosine (C)A bonds with T G bonds with C

phosphate

sugar N base

phosphate

sugar N base

phosphate

sugar N base

phosphate

sugar N baseComplimentary

Base pairing

Nucleotide chainsRibonucleic acid (RNA Structure)

single-sided

Nucleotides :Adenine (A)Uracil (U)Guanine (G)Cytosine (C)

A bonds with UG bonds with C

phosphate

sugar N base

phosphate

sugar N base

phosphate

sugar N base

phosphate

sugar N base

RNA

Ticket to leave

• Nucleotides make what polymer?• Draw and label a nucleotide.