DNA Replication/ Protein Synthesis (WJEC A2)

Protein Synthesis : Transcription

DNA is found the nucleus, but protein synthesis takes place in the cytoplasm. DNA carries the code for all  proteins.

DNA is not moved to the cytoplasm every time a protein needs to be made (as this would damage the DNA and this damage would result in mutations that are harmful to the organism), instead DNA acts as a template for the production of complementary base sequence of messenger RNA (mRNA).

mRNA then transfers the instructions needed for protein synthesis to the ribosomes in the cytoplasm.

^ This is Transcription

1) The mRNA is copied from a specific region of DNA called the cistron. Often this is equivalent to a gene and…