1. Review for MiniSum #2… …ughhh…. Yes, today!
MT 14, Blueprint of Life
Thursday
TOPIC:
MY GOAL: DO
THIS
NOW
I will… demonstrate my knowledge of Replication & RNA  I will also find out about mRNA & tRNA
Review for MiniSum #2… …ughhh…. Yes, today!

2. So the whole point to DNA REPLICATION…
…is to make sure the daughter cells have the correct number of DNA strands (Xsomes)
Replication!
A - T
C - G
T - A
G - C
A - T
C -G
T - A
G - C

3. RNA vs. DNA A – U (Adenine – Uracil) C – G (Cytosine – Guanine) A – T
RiboNucleic Acid
1 Strand
Sugar = Ribose
The nitrogen bases are:
A – U (Adenine – Uracil)
C – G (Cytosine – Guanine)
DeoxyriboNucleic Acid
2 strands
Sugar = deoxyribose
The 4 bases are:
A – T
C – G 3

4. Remember……DNA = A-T, C-G Remember……RNA = A-U, C-G
The cell needs RNA to take DNA’s message out to the ribosome where proteins are made.
Remember……DNA = A-T, C-G
Remember……RNA = A-U, C-G
STEP 1: Make matching 1/2DNA..
STEP 2: Use original DNA as template, make RNA.
A C G - G C A - T A A - G T A
T G C- C G T - A T T – C A T
A C G – T C A – T A A – G T A
U G C – A G U – A U U –C A U 4

5. MiniSummative #2 MT 14, Replication & RNA
PICK UP YOUR CLICKER & MiniSum
Read carefully  Understand what is being asked
Double-Check your work
Keep eyes on your own paper
POWER DOWN remote & Turn in quiz paper
DO THIS: 1st Read ISN page 124 (the diagrams) 2nd , complete the Notes on ISN p.125

6. The fx of DNA, as the Blueprint of Life, is to tell the cell to make proteins....but there is a problem….
DNA is in here…
PROTEINS are made OUT HERE!!!
So how does the message get out there?
The Directions get out there by way of RNA…
DNA us used to make RNA

7. DNA splits temporarily to make an RNA to deliver DNA’s message
ORIGINAL DNA
RNA
Use DNA as Template
MATCHING ½ of DNA A T T A C U A 7

8. How DNA tells the Ribosomes to make Proteins
DNA is in nucleus – too BIG - cannot leave – needs help to get message out to ribosomes to make proteins… RNA is made from DNA - helps deliver message
mRNA  interprets DNA’s message = called TRANSCRIPTION describes which a.a. should be put together to make a protein
a.a. in cytoplasm – need help getting over to ribosomes  picked up by tRNA  translates mRNA’s message = called TRANSLATION
Amino acids  make up proteins  characteristics!
TrAits!!! A T- C- A- T A G
3. PROTEINS
DNA U C A U C A
1. mRNA
1. mRNA aa C A U
aa.
aa. aa.
2. tRNA

9. replication transcription translation TGT - TAA –GGG mRNA mRNA mRNA
DNA
replication
ACA – ATT – CCC
TGT - TAA –GGG
transcription
mRNA
mRNA
mRNA
Ribosome
Ribosome
Ribosome
translation
tRNA
tRNA
tRNA
A.A
A.A
A.A
Protein
Protein
Protein
Trait
Trait
Trait 9

10. What RNA Is and Does! Stop Think And Review PBS clip: Show 1st 2 min

11. Why care about proteins!
1. Structural Proteins (make things)
determine eye color
make up muscles, tendons, ligaments
make up hair & nails
make up hormones
2. Functional Proteins (do things)
control chemical reactions
control muscle movement
digests your food
tell cells when to divide
carry oxygen in blood
help cells communicate with each other
antibody proteins protect against bacteria & viruses
Proteins make possible every activity in your body! 11

12. Be the change you wish to see in the world
Read your ISN pages
Silently
then out loud
then silently
then silently again
then get someone to quiz you
then read your ISN pages AGAIN!
HOMEWORK
Be the change you wish to see in the world 12 12