Download From DNA to protein

From DNA to protein
Transcription and Translation
A recipe for cookies
1.
2.
3.
4.
Copy the recipe from the book (it is
your Grandma’s, and you don’t want to
get it dirty)
Bring the recipe to the kitchen
Follow the instructions to put all the
ingredients together.
You end up with cookies!
Homework
Pages 2 & 3 of handout
 Read 12-3, pages 300 -306
1. Answer Section Assessment, page 306,
1-5
2. Define Vocabulary terms (not due until
day of test, can show me earlier)

A recipe for a protein

You copy the instructions (DNA) and
make another molecule called mRNA
◦ The process of Transcription

The mRNA bases match up just like DNA
does.
◦ Except: Instead of Thymine, Uracil is used
DNA being transcribed to RNA
Leaving the Nucleus…

The RNA can leave the nucleus and go
out to the cytoplasm where it will be
used to make protein.
Ribosome will attach
to the mRNA at the
site of protein
synthesis.
This process is called Translation
The process of using mRNA information
to assemble a protein.
 Like translating from one language into
another.

Processes of Transcription and
Translation
1) The double helix
unzipps.
2) mRNA is transcribed from
DNA. Adenine bonds to URACIL
(instead of to thymine)
4) Amino
acid
attached
to tRNA
5) Protein (a polymer
of amino acids bonded
together)
3) Ribosome will attach to
the mRNA at the site of
protein synthesis.
Now we put the Protein together

More RNA, called tRNA carries amino
acids (the building blocks for proteins) to
the mRNA, and reads the mRNA code.
How would your protein be put
together?

Every three bases is a codon. The codon
matches up with the tRNA anticodon,
which codes for a specific amino acid.
AGC
codon
UCG
The anticodon
Which amino
acid is coded
for with the
codon AUG?
START/methionine
Which amino
acid is coded
for with the
codon UAA?
STOP
Page 303