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DNA STRUCTURE
GRADE 8 SCIENCE
Words to Ponder
 Deoxyribonucleic Acid
 Purines
 Pyrimidines
 Nucleotide
 Nucleoside
 Genes
Question need to answer:
What is DNA?
What are the components of DNA?
Why is it important to study DNA?
Activity #1 Label the parts of DNA structure
 Sugar - Phosphate Nucleotide Adenine
 Thymine Guanine Cytosine Uracil
 Hydrogen bond Bases
Sugar-Phosphate
Adenine
Thymine
Guanine
Cytosine
Hydrogen Bond
Bases
Nucleotide
What is DNA?
 Deoxyribonucleic Acid
 Self replicating material
 Carrier of genetic information
What are the components of DNA?
Nucleotide
Activity #2: List some of the
importance of studying DNA
Why is it Important to study DNA?
 Disease diagnostic and treatment
 Paternity and legal impact
 Forensics and DNA
 Agriculture and DNA
Assignment:
 Construct a model of DNA using straw and wire.
Make sure to distinguish the bases thru color coding.
“Volumes of history written in the
ancient alphabet of G and C, A and
T.”
― Sy Montgomery, Search for the Golden Moon
Bear: Science and Adventure in Pursuit of a New
Species

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Dna structure