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Biology Cell Class Project

Molecular Biology- Dealing With Proteins

Home
A-Semipermeable Membranes
B-Enzymes
C- Cells and Viruses
D- Molecular Biology
E- E.R. and Golgo Appartus
F- Photosynthesis
G- Mitochondria
H- Macromolecules
I- Chemiosmotic gradients
J- Shape and Forms of Eukaryotic Cells
Bibliography

Students know the central dogma of molecular biology outlines the flow of information from transcription of ribonucleic acid (RNA) in the nucleaus to translation of proteins on ribosomes in the cytoplasm.

rnadna.jpg

DNA--->RNA---->PROTEINS

DNA

DNA (deoxyribonucleic acid) carries the genetic information for everyone. DNA is the blue prints for everyones' traits such as height, hair color, and eye color. It is located in the nucleus but it is too big to get out of the nucleus.

nucleus.jpg

RNA

RNA (Ribonucleic Acid)- RNA copies the DNA since it is too big to get out the nucleus and then brings it to the ribosomes in order to make proteins.

MRNA

MRNA is a type of RNA that takes the copy of the instructions from the nucleus and gives it to the ribosomes where proteins are made.

Proteins

Proteins make up everything that you can physically see on your body.

Protein Synthesis

DNA is in the nucleus but can not fit throught the pores because of its size.  Instead the RNA passes through the pores of the nucleus, copies it and then goes back to the cytoplasm where the ribosomes are. There the ribosomes construct the proteins from different amino acids.  The MRNA was the messenger that took the code from the nucleus and gives it to the ribosomes in order for the proteins to be made.

Translation and Transcription

Transcription happens in the nucleus. This is when the MRNA takes the copy of the DNA in order to make the proteins.
 
Translation is when the MRNA gives the information to the other RNA's in order to build the proteins that it brought from the nucleus. The proteins are made on the ribosomes not in it.