Protein Synthesis

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Transcript Protein Synthesis

Protein Synthesis
RNA versus DNA
Sugar
(Pg 65)
Deoxyribose
Bases
# strands
Stability/
longevity
Size/length
Stable, in cell for life of cell.
Types of RNA(Pg 65)
• List and explain the 3 kinds
Candy Factory Analogy
1.
mRNA transcribed from DNA
1. Boss gives recipe to messenger
2.
mRNA exits through nuclear
pore to cytoplasm/ribosome
3.
tRNA binds to amino acids
2. Messenger leaves office through
door; goes to factory floor and to
workstations
3. Workers pick up ingredients
4.
Loaded tRNA bonds mRNA at
ribosome
4. Workers assemble ingredients at
workstation
5.
Polypeptide chain grows in
response to mRNA codons
5. Ingredients are combined according
to recipe
6.
Completed protein either used
by cell or is packaged and
exported
6. Candy assembly finished; workers
eat some, rest is wrapped for
shipment
Protein synthesis and words
activity
• Follow teacher instructions
Key words in steps
(Pg 66)
• Give a word or phrase to explain the
following words:
RNA polymerase
Promotor
Template strand
mRNA
Termination site
Coding strand
Introns
Exons
Ribosome
Anticodon
Codon
Puffing
Gum drop Protein synthesis