GENETIC REGULATION PROKARYOTES QUIZ

binding to DNA enhancer region

binding to RNA polymerase

binding to a transcription factor

binding to DNA promoter region

bound to DNA

bound to both DNA and tryptophan

bound to neither tryptophan nor DNA

bound to tryptophan

attenuator terminates transcription

attenuator allows transcription of trp structural genes

None of these

attenuator propogates transcription

none of these

negative

positive

may be positive or negative

O

none of these

I

P

they are restricted to a specific gene

they are adjacent to the start codon

their orientation can be inverted without effect

they initiate transcription

It allows coordinating regulation of genes with a common function

An accident of evolution

The bacteria chromosome is so small; many different genes must be controlled by the same promoter

None of these

DNA methylation

leucine zippers

tubulin

tachykinins

TATA sequences

CAAT sequences

CG sequences

AC sequences

Helix-turn-helix proteins

Steroid hormones

Leucine zipper proteins

Zinc finger proteins