Transcript 3- Notes: DNA Structure 1.DNA Structure Lecture

ON YOUR OWN:
 In your notebook, brainstorm EVERYTHING
you already know about DNA
 It’s okay if you think it’s wrong, write it down
WITH TABLE GROUP:
 In your own notebook, add together all the
things the other people thought of that you
didn’t
 Erase/fix anything the other people taught
you that you may have thought incorrectly
 Should have a BIG list now!
SHARE OUT:
 EACH TABLE MUST SHARE 1 IDEA FROM
THEIR GROUP- 1 each round
 NO REPEATS!!!
 THIS MEANS YOU NEED TO PAY ATTENTION
 WE WILL KEEP GOING UNTIL WE CAN’T
FIND ANY MORE
DRAW A LINE BELOW YOUR NOTES
 WATCH THE VIDEO
 DNA Structure
 WRITE DOWN AS MANY DETAILS AS YOU CAN
CATCH
 WE WILL WATCH MULTIPLE TIMES SO IF YOU MISS
IT THE FIRST TIME, TRY TO CATCH IT NEXT TIME
 SHARE OUT
 WATCH AGAIN
Highlight as we go along
 Everything you already have in your
notes that you see in my noteshighlight it!!!
 In the end, we will see what you
noticed about DNA.
VOCABULARY
Mono- one
Poly- many/multiple
De- to take away or get rid of
VOCABULARY
 DNA: deoxyribonucleic acid
 (de-oxy-ribo-nucleic)
 Sugar- deoxyribose
 RNA: ribonucleic acid
 (ribo-nucleic)
 Sugar- ribose
Nucleotides have three parts
–Sugar
–Phosphate
–Nitrogenous Base
Nitrogenous
base
(adenine)
Phosphate
group
Sugar
Nitrogenous bases
phosphate
Adenine (A)
Thymine (T)
Cytosine (C)
Guanine (G)
Copyright © 2009 Pearson Education, Inc.
sugar
PHOSPHATES
SUGARS
Adenine
A
T
Cytosine
C
G
Thymine
T
C/G
Guanine
G
A/T
Thymine (T)
Cytosine (C)
Pyrimidines
Adenine (A)
Guanine (G)
Purines
Sugar-phosphate backbone
Phosphate group
Nitrogenous base
Sugar
Nitrogenous base
(A, G, C, or T)
DNA nucleotide
Phosphate
group
Thymine (T)
Sugar
(deoxyribose)
DNA nucleotide
DNA polynucleotide
Nucleic acids
 Two polynucleotide strands- DNA
double helix
–Hydrogen Bonds  base pairs
Copyright © 2009 Pearson Education, Inc.
Twist
Hydrogen bond
Base
pair
Ribbon model
Partial chemical structure
Computer model
The Central Dogma
 A sequence forms a
gene
 Every cell- millions of
base pairs and
hundreds of genes
– DNA
– RNA
– Proteins (Structures
and Functions)
Copyright © 2009 Pearson Education, Inc.
Let’s Review!!!
 What were some things you saw in my notes that
you already had in your notes?
LET’S BUILD IT:
BUILD IT IN THE
SAME ORDER AS ME,
AND THEN FINISH
THE SEQUENCE:
Place it on your paper
first, and I will double
check you have done
it correctly before you
glue it down.
T
G
C
G
T
A
C
A
T
LET’S BUILD IT:
 WHAT DOES THE OTHER SIDE LOOK LIKE?
BUILD IT!!!
ADD TO YOUR LIST
 WHAT DO YOU NOTICE ABOUT YOUR DNA
STRANDS?
 WRITE DOWN MORE DETAILS ON YOUR LIST
DO NOW
What are the
three parts of a
nucleotide?