1. Q Card Quiz What is……….. The basic function of DNA
The basic structure of DNA
Name the four nitrogenous bases
Match the bases correctly

2. The basic function of DNA
--- Carries hereditary information
The basic structure of DNA
-- A double helix made up of nucleotides
Name the four nitrogenous bases
--- adenine, guanine, cytosine, thymine
Match the bases correctly
-- A-T
--- C-G

3. Transcription- a working copy of DNA

4. Working copy of DNA leaves nucleus.
Only copy one strand.
Working copy of DNA leaves nucleus.
Read the “instructions” that are coded in the sequence of base pairs
Create proteins, which will create you!
Draw a picture of

5. Working copy of DNA is mRNA
What’s RNA???

6. RNA- 3 differences The sugar is ribose, not deoxyribose
RNA single stranded
RNA base- uracil instead of thymine

7. Transcription DNA is copied into mRNA
RNA polymerase splits DNA
Complimentary base pairing creates single strand of mRNA
Copies a select piece of DNA-gene
mRNA leaves the nucleus

8. mRNA Animation

9. DNA G C T A C C T G C A T A
mRNA?
C G A U G G A C G U A U

10. mRNA carries information in codons –a group of 3 nucleotides is the code for one amino acid
Review- proteins are made up of amino acids.

11. Practice DNA Sequence CTGGGTAGCCTACAGTAG mRNA: GACCCAUCGG
Codons- GROUP THE BASES IN 3’S
GACCCAUCGGAUGUCAUC
GAC-CCA-UCG-GAU-GUC-AUC

12. Codons GAC-CCA-UCG-GAU-GUC-AUC 1 codon = amino acid.
64 different combinations and only 20 amino acids
Remember, we are looking at mRNA

13. Groups of 3 bases on mRNA code for an amino acid.
A string of amino acids makes a protein, SPECIFICALLY ENZYMES
ENZYMES make you!

14. Magic decoder ring