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Matric IEB Life Sciences: DNA R200,00
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Matric IEB Life Sciences: DNA

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Handwritten Apple Goodnotes Grade 12 IEB study document for DNA. Designed with clear explanations, diagrams, and concise summaries, these notes cover most key topics in alignment with the IEB Life Sciences syllabus. Through use of step-by-step approaches and detailed problem-solving techniques - le...

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  • January 19, 2025
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  • 2023/2024
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, Nucleic Acids

·
"Molecules of life"


Store Information
Controls" Cellular Development Control the
of
synthesis of proteins
Activity an
organism

·
Nuclei Acids :
1
Deoxyribonucleic acid DNA
.
2 Ribonucleic acid RNA


Deoxyribonucleic acid DNA


structure :
Discovery of DNA

1952
Kings College
Maurice Wilkens and Rosalind Franklin provided X
crystallography diffraction
image
·




ray
approach
·
James Watson and Francis Crick used Wilkens' Franklin's work to
determine DNA double helix structure received nobe prize in 1962 for
medicine
They .




physiology .




DNA Make up


Long twisted ladder.
·


,
·
two strands twist to form a stable 3 ,
dimensional Double Helix .




DNA is a biomolecule made
up
of Nucleotides monomers of DNA
Complimentary base pairs


Each nucleotide contains : ·

A T and G C



bonded weak
Sugar molecule
Deoxyribose Bases
together by
·
1 . are


.
2
Phosphate molecule
Hydrogen bonds.
bonds , bonds
.
3
Nitrogenous base ·
T M+ 2 He C+ G 3 He

A and G

Adenine A Guanine G
·
Purines two fused of Nu Hz and Carbon
-

↑ 1 and C
,
rings ,



Thymine T Cytosine C
Pyrimidines ring
of similar atoms much smaller
.
one
,

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