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DNA Structure - Part 2.

Published byLiana Sudirman Modified over 5 years ago

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Presentation on theme: "DNA Structure - Part 2."— Presentation transcript:

1 DNA Structure - Part 2

2 Learning Objectives Describe the basic shape of DNA
Name the three parts of a nucleotide

3 The Shape of the DNA Molecule
The basic shape is like a twisted ladder called a double helix The DNA double helix has two strands twisted together

4 Components of DNA The DNA backbone is made of alternating phosphates and deoxyribose sugar The rungs are nitrogenase bases P Base Sugar Sugar Base P P Sugar Base Base Sugar P P Base Base Sugar Sugar P P Sugar Sugar Base Base P

5 Monomer of DNA or RNA Nucleotide DNA and RNA are made of monomers called nucleotides

6 Nucleotide Phosphate Nitrogenous Base Deoxyribose Sugar
One deoxyribose sugar, one phosphate and one nitrogenous base make a nucleotide.

7 DNA Structure Amoeba Sisters
YouTube Video DNA Structure Amoeba Sisters

8 Stop Here

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