basic building block of nucleic acids three parts: › 5-carbon sugar › phosphate group ›…

DNA Structure & Replication Key Terms CSCOPE Unit 06 Lesson 01

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 Deoxyribonucleic acid  Double-stranded nucleic acid  D ouble helix shape—like a twisted ladder  Contains genetic information for cell functions, growth, and division.

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Page 1: Basic building block of nucleic acids Three parts: › 5-Carbon Sugar › Phosphate group ›…

DNA Structure & Replication Key Terms

CSCOPE Unit 06 Lesson 01

Page 2: Basic building block of nucleic acids Three parts: › 5-Carbon Sugar › Phosphate group ›…

Nucleotide Basic building block of nucleic acids

Three parts:› 5-Carbon Sugar› Phosphate group› Nitrogen base

Page 3: Basic building block of nucleic acids Three parts: › 5-Carbon Sugar › Phosphate group ›…

DNA Deoxyribonucleic acid Double-stranded nucleic

acid Double helix shape—like a twisted ladder Contains genetic

information for cell functions, growth, and division.

Page 4: Basic building block of nucleic acids Three parts: › 5-Carbon Sugar › Phosphate group ›…

Deoxyribose Sugar

Sugar component in the backbone of DNA

5-Carbon sugar

Phosphate Group

Binds with sugar in DNA backbone

Nitrogen Base Pairs Nitrogen base pairs form

the “rungs” of the DNA structure.

Adenine› Purine base that pairs with

thymine Thymine

› Pyrimidine base that pairs with adenine

Cytosine› Pyrimidine base that pairs

with guanine Guanine

› Purine base that pairs with cytosine

Page 7: Basic building block of nucleic acids Three parts: › 5-Carbon Sugar › Phosphate group ›…

REMEMBER!! Adenine ALWAYS pairs with Thymine in

DNA molecules!!

Cytosine ALWAYS pairs with Guanine!!

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