1. Chapter 12-3 Protein Synthesis (Protein Building)

2. Polypeptide-chain of amino acids
Review- DNA
DNA is made of nucleotides.
Deoxyribose sugar and phosphates make up the sides of the DNA ladder.
Nitrogen base pairs make up the steps of the DNA ladder.
The order of the nitrogen base pairs determines the code/holds the instructions for making proteins that determine all of our traits.
Polypeptide-chain of amino acids

3. Protein Review: *Building Blocks?___________ How many different
types?_____
*2 groups of proteins: Functional and Structural
1. Functional proteins (3 types)
a.________ Speed up chemical reactions
b. Hormones- influence organs or structures
Ex. ________, _______, ________
c. Antibodies-part of immune system
2. Structural proteins- form structures in
organisms
Amino Acid 20
Enzymes
Testosterone
Estrogen
Adrenalin
Muscles
Bones
Skin

4. RNA
NOVA Science RNA (15 min)

5. RNA- Ribonucleic Acid (the other nucleic acid)
Function- carries out the instructions coded in DNA
( DNA – original RNA- copy)
B. Composed of nucleotides- (3 parts)
1. 5-carbon sugar- ribose
2. phosphoric acid ( phosphate)
3. nitrogen base- 4 types ( adenine,
cytosine, guanine and URACIL <replaces
thymine>)
C. Complementary to one side of DNA strand

6. Example: DNA=T-C-C-G-T-A-A-C-T-G-C-A
RNA=A-G-G-C-A-U-U-G-A-C-G-U

7. Delivers a copy of DNA’s
5. Three types of RNA
CONSTRUCTION
SITE
DELIVERY
TRUCK
Amino acid
ribosome
uracil
BLUEPRINT G G C A C A U C C G U U
b. Ribosomal RNA
c.Transfer RNA
a. Messenger RNA-
Assembles amino acids
to make proteins
Delivers AA
To the ribosome
according
to mRNA codon
Delivers a copy of DNA’s
Code to the ribosome

8. D. RNA Differs from DNA 7 ways
1.Sugars
2.Nitrogen Bases
3.Types and function
4.Location
5.Number of strands
6.Description
7..How do you get it?
D. RNA Differs from DNA 7 ways
Deoxyribose
Ribose
A T C G
A U C G
3 types- rRNA
tRNA, mRNA
Each has a
Specific job
1 type- stores
Genetic info for
making proteins
Nucleus
Cytoplasm
Ribosome
Nucleus
ONE strand
Half the ladder
TWO strands
Original
Copy (of DNA)
Originally from parents
Then your cells make
It from foods you eat.
You make
Your own

9. Deoxyribonucleic Acid
RNA
Single Strand
DNA
Double Strand D. C C G G A A T U
Deoxyribonucleic Acid
Ribonucleic Acid
DNA
Nitrogen bases
RNA
Nitrogen Bases