Protein Synthesis By: Elizabeth

The Roles Of DNA, mRNA, tRNA and rRNA

DNA is the blueprint for the RNA. It is stored in the nucleus and replicates whenever RNA is needed to make proteins. mRNA is what is sent out of the cell to the ribosome to make protein. mRNA is supposed to make it to the ribosome for protein synthesis. tRNA is what reads the mRNA and figures out what amino acid is needed. rRNA is what forms the ribosome and is needed for the structure of the ribosome.

The Steps Of DNA Replication

The first step in DNA replication is when the DNA helicase unzips into two different strands of DNA. One strand is matched with a complementary base while the other is sent out of the cell for protein synthesis. This step is called transcription and occurs in the nucleus.

The next step in DNA replication is when the mRNA reaches the ribosome and the ribosome starts to read the mRNA. This step is called translation and is when amino acid chains form proteins. Translation occurs in the cytoplasm and in the ribosomes.

This is what translation looks like.

Codons are groups of three base pairs that form the code for a certain amino acid.

The complementary nature of DNA is when a strand of RNA and DNA are lined up beside each other, the bases will pair up. The codons and anticodons of the DNA will line up, therefore the amino acid that is paired with each codon will be the same.

The End


Created with images by Arenamontanus - "DNA"

Report Abuse

If you feel that this video content violates the Adobe Terms of Use, you may report this content by filling out this quick form.

To report a Copyright Violation, please follow Section 17 in the Terms of Use.