Week 3 Flashcards
I can recognise the different parts of eukaryotic and prokaryotic genes and explain what they do. I can explain how the results of modelling the trp operon relate to the cellular processes that regulate it (8 cards)
What is an operon?
A group of genes under the control of a single promoter and operator.
What is the operator region?
A short DNA region, adjacent to the promoter of a prokaryotic operon, that binds repressor proteins responsible for controlling the rate of transcription of the operon.
What is a repressor protein?
A regulatory protein that binds to an operator and blocks transcription of the genes of an operon.
What are structural genes?
Genes that code for all proteins, except for regulatory proteins.
What is a regulatory sequence?
The part of a gene that determines the timing, amount, and location of protein production.
What is attenuation?
A regulatory mechanism used in bacterial operons to ensure proper transcription and translation.
What is a promoter region?
A region of DNA that RNA polymerase attaches to begin transcription.
What is a leader region?
The first portion of mRNA which can fold into 2 different secondary structures; one structure allows further transcription while the second causes premature termination.
