p 26 106 Monomer Nucleotide Polymer Nucleic acid Phosphate Sugar deoxyribose Nitrogenous Base DNA THE BIG PICTURE Cells Cell Membrane Molecule Movement Carbs Lipids and Proteins ID: 778869
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Slide1
E.Q. What are the components of DNA?
p
26
10/6
Monomer = Nucleotide
Polymer = Nucleic acid
Phosphate
Sugar (deoxyribose)
Nitrogenous Base
DNA!!
Slide2THE BIG PICTURE
Cells
Slide3Cell Membrane
Slide4Molecule Movement
Slide5Carbs, Lipids, and Proteins
Also used as energy from food
Slide6Nucleus
Slide7A lesson from Jurassic Park...
Slide8Slide9How many parts to a Nucleic Acid??
Slide101
2
3
Slide11Phosphate
Nitrogenous Base
Sugar
Slide12Slide13Half a DNA
Nitrogenous Base
Phosphate
Sugar
Slide14Full DNA
Phosphate
Phosphate
Nitrogenous Bases
Slide15DNA Double Helix
Nitrogenous
Base (A,T,G or C)
“Rungs of ladder”
“Legs of ladder”
Phosphate &
Sugar Backbone
Slide16For Thursday: A
HISTORY OF DNA
Discovery of the
DNA double helix
A.
Rosalind Franklin - X-ray photo of DNA. (1952)
B.
Watson and Crick - described the DNA molecule from Franklin’s X-ray.
(1953)
Slide17Nitrogenous Base
Slide18Nitrogenous Bases
PURINES
1.
Adenine (A) 2. Guanine (G)
PYRIMIDINES 3.
Thymine (T) 4.
Cytosine (C)
T or C
A or G
Slide19Adenine
must pair with
Thymine
Guanine must pair with Cytosine
Their amounts in a given DNA molecule will be about the same.
G
C
T
A
The apple grows on the tree!
The car goes in the garage!
Slide20Apples Grow on
Trees
Adenine to Thymine
Slide21Cars go in
Garages
C
ytosine to Guanine
Slide22DNA Double Helix
P
P
P
O
O
O
1
2
3
4
5
5
3
3
5
P
P
P
O
O
O
1
2
3
4
5
5
3
5
3
G
C
T
A
HYDROGEN BONDS
Slide23The differently shaped bases are bonded together antiparallel
to one another (5’3’)
DNA
ladder will twist into a double helix shape
Slide24Antiparallel
Slide25Important to Remember:
All living things have DNA!
Scientists refer to this as a “common genetic code”
The sequence of bases matters! The order determines the organism.
Slide26Replicating DNA
DNA Molecule #1
G
TCAC
TGT
GCT
A
Slide27Replicating DNA
DNA Molecule #1
G
TCAC
TGT
GCT
A
C
A
G
T
G
A
C
A
C
G
A
T
Slide28