I have my answers but need the extra points in this class so I really need some the help to ensure they are right. I appreciate the help!!
Cyclic AMP (cAMP) is a small effector molecule that binds to CAP. When cAMP binds to CAP the transcription rate of the Lac-operon increases. Glucose inhibits cAMP production. How would the addition of glucose affect the rate of lactose metabolism?
A. Increase
B. Decrease
C. Remain the same
When an effector molecule binds to a transcription repressor protein, the repressor protein changes shape and is no longer able to bind to DNA. What would happen to the rate of transcription if the concentration of the effector molecules was reduced?
A. Increase
B. Decrease
C. Remain the same
The lac repressor protein inhibits the transcription of the 3 Lac-operon genes. When lactose is present, allolactose binds to the repressor and transcription of the Lac-operon genes is initiated. In this case the allolactose molecules is function as a(n)—
A.Inhibitor
B.Repressor
C.Effector molecule
D.Promoter
If a mutation damaged the enhancer regulatory element in a eukaryotic gene promoter, how would this affect the transcription of the gene?
A.The transcriptional start site would be shifted
B.The TATA box would be nonfunctional
C.The rate of transcription would be very low
D.The promoter would signal early termination
E.Transcription would be inaccurate
People with Rett syndrome have non-functional methyl-CpG binding proteins. How does this affect the person?
A.Unable to accurately transcribe DNA
B.DNA transcription cannot be inititated
C.DNA cannot be converted into the open confirmation
D.Regulation of transcription is impaired
E.Mediator protein cannot be methylated
If an individual is incapable of producing miRNAs this would cause
A.much mRNA would be prevented from undergoing translation
B.much mRNA would be translated
C.much mRNA would be transcribed
D. very little mRNA would be transcribed
Which of these is NOT an advantage of gene regulation?
A.allows the organism to respond to the environment
B.allows for cellular diferentiation
C.allows different genes to be turned on during development
D.allows sex differentiation to occur early in development
The genes for glucose metabolism are found in an operon that is controlled by a repressor and activator. Based on this, these genes
A.are most likely found in a prokaryote
B.are most likely found in a eukaryote
C.must always be turned on
D.cannot be turned on unless glucose is present
My answers are
B
A
C
C
D
B
B
A
Can someone please verify that these are correct?
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