DNA to RNA to Protein synthesis Notes labeling

DNA to RNA to Protein synthesis Notes labeling Worksheets 12. 3

What does DNA do for this dog?

• A gene is a sequence of DNA on the chromosome that codes for a protein. • DNA never leaves the nucleus.

• All cell functions are the result of the synthesis of proteins • Functions like:

Proteins are made in a 2 step process 1. Transcription 2. Translation Transcription Animation http: //www. concord. org/~btinker/workbench_ web/models/euk. Transcription. swf

1. Transcription • Producing a copy of the nucleotide sequences of DNA into a sequence of m. RNA is messenger RNA • Transcription takes place inside the nucleus

• m. RNA has 4 nucleotides Guanine _____ Cytsine _____ Adenine ____ ** Uracil ____

Making m. RNA ACC GTA CTT ACG TTA CGC AAT __________________ When m. RNA is created the strand moves out of the nucleus to the _ribosome

2. Translation • Decodes the m. RNA message into a poly peptide chain. • At the ribosome the m. RNA is read 3 letters at a time. This is called a codon. • Animation http: //lab. concord. org/embeddable. html#interactives/sam/DNA-to -proteins/3 -modeling-translation. json

• t. RNA or transfer RNA base pairs with the m. RNA codon at the ribosome. • The three letters on the t. RNA are called the anti-codon

t. RNA

• The t. RNA carries the amino acid that will make up the protein.

Label your diagram with these parts • • • Ribosome Codon Anticodon m. RNA Transport to the cytoplasm Translation Transcription Amino acid t. RNA Amino acid chain Nuclear membrane