Protein Synthesis Worksheet PART A. Read The Following and Take Notes On Your Paper
Protein Synthesis Worksheet PART A. Read The Following and Take Notes On Your Paper
Protein Synthesis Worksheet PART A. Read The Following and Take Notes On Your Paper
Protein synthesis is the process used by the body to make proteins. The first step of protein synthesis is called
Transcription. It occurs in the nucleus. During transcription, mRNA transcribes (copies) DNA. DNA is
“unzipped” and the mRNA strand copies a strand of DNA. Once it does this, mRNA leaves the nucleus and
goes into the cytoplasm. mRNA will then attach itself to a ribosome. The strand of mRNA is then read in order
to make protein. They are read 3 bases at a time. These bases are called codons. tRNA is the fetching puppy.
It brings the amino acids to the ribosome to help make the protein. The 3 bases on tRNA are called anti-codons.
Remember, amino acids are the building blocks for protein. On the mRNA strand, there are start and stop
codons. Your body knows where to start and stop making certain proteins. Just like when we read a sentence,
we know when to start reading by the capitalized word and when to stop by the period.
Example:
DNA AGA CGG TAC CTC CGG TGG GTG CTT GTC TGT ATC CTT CTC AGT ATC
mRNA UCU GCC AUG GAG GCC ACC CAC GAA CAG ACA UAG GAA GAG UCA UAG
protein start - glu – ala –thre – hist – asp -glu-threo-stop
acid acid
1. DNA CCT CTT TAC ACA CGG AGG GTA CGC TAT TCT ATG ATT ACA CGG TTG CGA TCC ATA ATC
mRNA
protein
2. DNA AGA ACA TAA TAC CTC TTA ACA CTC TAA AGA CCA GCA CTC CGA TGA ACT GGA GCA
mRNA
protein
3. DNA TAC CTT GGG GAA TAT ACA CGC TGG CTT CGA TGA ATC CGT ACG GTA CTC GCC ATC
mRNA
protein
4. DNA TAA ACT CGG TAC CTA GCT TAG ATC TAA TTA CCC ATC
mRNA
protein
5. DNA CTA TTA CGA TAC TAG AGC GAA TAG AAA CTT ATC ATC
mRNA
protein
6. DNA TAC CTT AGT TAT CCA TTG ACT CGA ATT GTG CGC TTG CTG ATC
mRNA
protein
7. DNA ACC CGA TAC CTC TCT TAT AGC ATT ACA AAC CTC CGA GCG
mRNA
protein
8. DNA TAC AGA CGG CAA CTC TGG GTG CTT TGT TCT CTT CTC AGT ATC
mRNA
protein