Information Flow

Information Flow in the Cell
By Wesley Jacobs,
Lindsey Bernstein,
and Stuart Yochem
The Information flow in the cell beings with a message outside the nucleus that tells it "we need amino acids." This message begins a complex set of actions that will produce amino acid production. The first step is replication. It occurs in the nucleus during cell division and cytokinesis. Replication results in two identical strands of DNA. The second step is Transcription, which also occurs in the nucleus. A portion of the DNA molecule is copied onto a single strand of RNA. In this step DNA is the substrate molecule and RNA is the product. The third and final step is Translation. This is the most complicated step and occurs in the ribosome. The RNA leaves the nucleus and travels to the ribosome where its nitrogenous bases are read. Three nitrogenous bases are called a codon, and each codon codes for one amino acid. This process underlies all proteins and protein function.

Category:

Science & Technology

Tags:

• information
• flow
• in
• the
• cell

[SamuelHammer]

very sweet.

however, since you "quoted" me I think you'd better go back to the lab manual and check your facts...

1) replication doesn't produce RNA. so during replication RNA is not transcribed.

[wesleyjacobs]

Sorry.

That was a complete mistake on the voice recording. Our group knows that replication produces two identical strands of DNA.

Our mistake.

[globfrob]

how does a protein leave the cell?