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Bio 6b
Explain
replication,
transcription,
and translation
using models of
DNA and
ribonucleic acid
(RNA);
Translation
Transcription
DNA
In nucleus
mRNA
On ribosome
Protein
TRANSCRIPTION: A matches with U
and G matches with C, mRNA copies the
DNA instructions for a protien and carries
them out of the nucleus.
http://www.johnkyrk.com/DNAtranscription.html
Nucleus
TRANSLATION: mRNA is decoded on a
ribosome. tRNA’s bring in amino acids that match
the code to create a protein. Use an amino acid
chart to decode every three mRNA bases to see
what amino acid the tRNA’s will carry in to build a
protein. http://www.johnkyrk.com/DNAtranslation.html
Translation
Transcription
DNA
In nucleus
Now you try it:
mRNA
On ribosome
Protein
TACACCGTC
1. Write this DNA code down the side of your marker board or
paper.
1. Use TRANSCRIPTION to decode the strand into mRNA.
2. Model TRANSATION by listing the amino acids that these
codons stand for. Use the amino acid chart on the next slide.
TACACCGTCDNA
A
U
G
U
G
G
C
A
G
mRNA
Transcription
Methionine
Peptide Bonds
Tryptophan
Glutamine
Amino Acids
Translation
Do you have the BIG PICTURE?
An analogy can help us understand the complex
process of transcription and translation. Use this story
to help you place the strip provided in order on the
flow map.
*Remember that RNA
contains Uracil (U),
not Thymine (T)