Chapter 8 Vocab Flashcards
a control mechanism in which a change in some variable triggers mechanisms that amplify the change
positive feedback loop
a bacterial protein that suppresses the expression of operon genes
repressor
proteins that bind to specific DNA sequences and affect gene expression
gene regulatory protein
the turning on and off of sets of genes in a given cell
gene expression
a bacterial protein that binds to DNA and enhances transcription
activator
An A-T rich DNA sequence that makes up part of eukaryotic promoters
TATA box
proteins which assemble around the TATA box and help initiate transcription
general transcription factors
control of gene expression using sets of transcription factors
combinatorial control
the DNA binding protein that can attach to the trp operator
tryptophan repressor
a DNA sequence used by the cell to control gene expression
regulatory DNA sequence
the structural and functional divergence of cells as they become specialized during a multicellular organism’s development
differentiation
