GENETIC REGULATION PROKARYOTES QUIZ

DNA is methylated at

AC sequences

CAAT sequences

CG sequences

TATA sequences

TRUE ANSWER : ?
YOUR ANSWER : ?

Alternate splicing of RNA transcripts is a mechanism to regulate

tachykinins

DNA methylation

tubulin

leucine zippers

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following occur in the presence of glucose?

lac Z gene expression is increased

None of these

Binding of CAP-cAMP complex to the promoter area decreases

cAMP increases

TRUE ANSWER : ?
YOUR ANSWER : ?

In the presence of high levels of tryptophan

attenuator terminates transcription

attenuator propogates transcription

attenuator allows transcription of trp structural genes

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The first protein complex to bind to the TATA box is

all of these

transcription factor IID

transcription factor IIA

transcription factor IIB

TRUE ANSWER : ?
YOUR ANSWER : ?

Sex lethal (sxl) in Drosophila is transcribed when

the X autosome balance equals 0.5

None of these

the X autosome balance is 1 or greater

the X autosome balance is less than 0.5

TRUE ANSWER : ?
YOUR ANSWER : ?

The lac operon is translated into __________ proteins.

1

2

3

4

TRUE ANSWER : ?
YOUR ANSWER : ?

The lac operon is transcribed in which segments?

4

2

3

1

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a transcription factor?

Steroid hormones

Helix-turn-helix proteins

Leucine zipper proteins

Zinc finger proteins

TRUE ANSWER : ?
YOUR ANSWER : ?

Enhancers differ from promoters in that

they initiate transcription

their orientation can be inverted without effect

they are adjacent to the start codon

they are restricted to a specific gene

TRUE ANSWER : ?
YOUR ANSWER : ?

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