Functions of DNA DNA must do three important things: 1. Carry information from one generation to the...
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Transcript of Functions of DNA DNA must do three important things: 1. Carry information from one generation to the...
![Page 1: Functions of DNA DNA must do three important things: 1. Carry information from one generation to the next 2. Put that information to work – (Determine.](https://reader035.fdocuments.in/reader035/viewer/2022081513/56649f185503460f94c2f01d/html5/thumbnails/1.jpg)
Functions of DNA
DNA must do three important things:
1. Carry information from one generation to the next
2. Put that information to work– (Determine the heritable
characteristics of organisms)
3. Be easily copied– (All a cell’s information has to
duplicated every time a cell divides)
![Page 2: Functions of DNA DNA must do three important things: 1. Carry information from one generation to the next 2. Put that information to work – (Determine.](https://reader035.fdocuments.in/reader035/viewer/2022081513/56649f185503460f94c2f01d/html5/thumbnails/2.jpg)
DNA Structure
(DNA is a VERY long molecule) Made up of units (monomers)
called nucleotides 3 parts to a nucleotide:
1. 5-carbon sugar: deoxyribosedeoxyribose
2. Phosphate group
3. A nitrogen base
![Page 3: Functions of DNA DNA must do three important things: 1. Carry information from one generation to the next 2. Put that information to work – (Determine.](https://reader035.fdocuments.in/reader035/viewer/2022081513/56649f185503460f94c2f01d/html5/thumbnails/3.jpg)
Nitrogen Bases
Adenine (A) Guanine (G) Cytosine (C) Thymine (T)
Cytosine and Thymine are PYRIMIDINES Adenine and Guanine are PURINES
![Page 4: Functions of DNA DNA must do three important things: 1. Carry information from one generation to the next 2. Put that information to work – (Determine.](https://reader035.fdocuments.in/reader035/viewer/2022081513/56649f185503460f94c2f01d/html5/thumbnails/4.jpg)
“Backbone” of DNA is formed by the sugar and phosphate groups
Bases stick out sideways from the “backbone”
Nucleotides can be joined together in any order (ANY sequence is
possible!!)
DNA Structure
![Page 5: Functions of DNA DNA must do three important things: 1. Carry information from one generation to the next 2. Put that information to work – (Determine.](https://reader035.fdocuments.in/reader035/viewer/2022081513/56649f185503460f94c2f01d/html5/thumbnails/5.jpg)
Double Helix
Two spiral structures, wrapped around each other