GENETIC REGULATION PROKARYOTES QUIZ

none of these

may be positive or negative

positive

negative

TATA boxes

GC regions

common transcription factor binding domains

CAAT regions

binding to DNA promoter region

binding to a transcription factor

binding to RNA polymerase

binding to DNA enhancer region

None of these

no operon expression

constitutive trp operon expression

inducible trp operon expression

bound to neither tryptophan nor DNA

bound to both DNA and tryptophan

bound to tryptophan

bound to DNA

splicing of the tubulin transcript

binding of tubulin to tubulin mRNA

binding of tubulin to DNA

binding of tubulin to the tubulin translational product

1

2

3

4

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

Early genes will not be translated

Middle genes will not be transcribed

Infection will proceed as usual

The bacterial host will lyse immediately

cAMP increases

None of these

Binding of CAP-cAMP complex to the promoter area decreases

lac Z gene expression is increased