GENETIC REGULATION PROKARYOTES QUIZ

lac Z gene expression is increased

None of these

Binding of CAP-cAMP complex to the promoter area decreases

cAMP increases

An accident of evolution

None of these

It allows coordinating regulation of genes with a common function

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

bound to both DNA and tryptophan

bound to DNA

bound to neither tryptophan nor DNA

bound to tryptophan

common transcription factor binding domains

GC regions

CAAT regions

TATA boxes

4

3

1

2

they are restricted to a specific gene

they initiate transcription

their orientation can be inverted without effect

they are adjacent to the start codon

Infection will proceed as usual

Early genes will not be translated

Middle genes will not be transcribed

The bacterial host will lyse immediately

binding to DNA enhancer region

binding to DNA promoter region

binding to RNA polymerase

binding to a transcription factor

no operon expression

constitutive trp operon expression

None of these

inducible trp operon expression

O

P

none of these

I