TranscriptionProtein Synthesis Part 1

pp. 204-206

Overview

The first step to making proteins is called transcription

DNA RNA Protein

Location

Prokaryote: Cytoplasm

Eukaryote: Nucleus

Transcription

DNA RNA Protein DNA is “rewritten” into mRNA Only genes needed for

specific proteins are transcribed

Transcription RNA Polymerase binds to

DNA DNA unzips

Transcription

RNA Polymerase adds complementary RNA Nucleotides

RNA has Uracil (U) instead of Thymine (T)

Guanine and Thymine are the same

Transcription EXAMPLE:

Polymerase falls off & DNA rebinds

DNA Stran

d

T C A G C A G C T A G TA G T C G T C G A T C A

mRNA

Strand

A G U C G U C G A U C A

Result of Transcription Produces a single strand of

RNA mRNA then carries

“instructions” to ribosomes in the cytoplasm to make proteins

Vocabulary Transcription Uracil RNA Polymerase

In your tables, summarize the main goal of Transcription