DNA Replication and Protein Synthesis

Translation CodeSection 3

BiologyFall 2012

Write a word map that describes transcription:

Write a word map that describes translation:

Compare the structure of RNA with that of DNA

Summarize the process of transcription Relate the role of codons to the

sequence of amino acids that results after translation

Outline the major steps of translation Discuss the evolutionary significance of

the genetic code

http://www.youtube.com/watch?v=ztPkv7wc3yU

http://www.youtube.com/watch?v=5bLEDd-PSTQ

___________________ RNA (mRNA) is made when a cell needs a particular _____________

mRNA: form of RNA that carries the _______________ for making a protein from a gene and delivers it to the site of ___________________

______________________: information translated from the language of __________ (nucleotides) to the language of _______________________ (amino acids)

___________: RNA instructions are written as a series of 3-nucleotide sequences on the _____________

Each ___________ along mRNA strand corresponds to an __________________ or signifies a start or stop signal for translation

__________________: the ______________ and __________ and __________ signals that are coded for by each of the possible 64 ___________ codons

1. Find the first base of the mRNA codon along the left side of the table

2. Follow that row to the right until you are beneath the second base of the codon

3. Move up or down in that section until you are even, on the right side of the chart, with the third base of the codon

Translate this mRNA sequence into amino acids:

Translation takes place in the _____________

______________________ (tRNA): single strands of RNA that temporarly carry a specific ______________________ on one end Each has an _____________________: a three

nucleotide sequence on a tRNA that is complementary to an mRNA codon

Transfer this mRNA sequence into its tRNA anticodon and its amino acid

tRNA anticodons: •__________________•__________________•__________________•__________________

Amino acids

___________________: composed of both proteins and ribosomal RNA Each ribosome temporarily holds one

_________ and two __________ molecules _______: RNA molecules that are part of

the structure of ribosomes

Genetic code review:http://www.youtube.com/watch?

v=XwTExa8rs5A Lets watch a video of transcription and

translation for review!http://www.youtube.com/watch?

v=bpMhgAGybe4&feature=related