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- 1. Multiple ChoiceThe "on/off" switch for an operon is called thepromoterrepressoroperatorgene
- 2. Multiple Choicewhat does a promoter do?it allows a gene to be transcribedit creates a DNA segmentit is another word for ribosomesit is another word for RNA
- 3. Multiple Choicewhat is an operon?a part of a ribsomea part of a Rnaa unit made up of linked genes that code for proteins needed to do a specific taskneeded for dna replication
- 4. Multiple ChoiceAn operon consists of all the the following EXCEPToperatorpromoterregulatory genegenes of the operon
- 5. Multiple ChoiceA protein that binds to the operator and blocks the RNA polymeraseregulatorrepressoractivatorcorepressor
- 6. Multiple ChoiceA small molecule that binds to a repressor and makes it activerepressorregulatoractivatorcorepressor
- 7. Multiple ChoiceA small molecule that binds to the repressor and makes it inactive iscorepressorinducerpromoteroperator
- 8. Multiple ChoiceWhen a gene transcribes unless turned off by a repressor, it is considered _____ controlnegativepositive
- 9. Multiple ChoiceWhen a gene does not transcribe unless turned on by activator , it is considered _____ controlpositivenegative
- 10. Multiple ChoiceTwo types of negative control arerepressible & induciblerepressible & activeactive & inactiverepressible & corepressible
- 11. Multiple ChoiceInducible negative control is when when the gene is transcribed by the ____ of a specific moleculepresenceabsence
- 12. Multiple ChoiceRepressible negative control is when when the gene is transcribed by the ____ of a specific moleculepresenceabsence
- 13. Multiple ChoiceWhat is an example of positive control?The lac operon being transcribed when lactose is presentThe trp operon being transcribed when tryptophan is absentthe lac promoter being activated by CAP when cAMP levels risecontrol is all just an illusion
- 14. Multiple ChoiceAll of the following are true about DNA methylation EXCEPTtakes place on the DNAenzymes add a methyl groupwhen it occurs, transcription is more likely to occurchromatin becomes more tightly packed
- 15. Multiple ChoiceAll of the following are true about histone acetylation EXCEPTtakes place on the histoneenzymes add a acetyl groupwhen it occurs, transcription is more likely to occurchromatin becomes more tightly packed
- 16. Multiple ChoiceInheritance of traits by mechanisms not directly involving nucleotide sequence is calledepigenetic inheritancedifferential gene expressionchromosomal inheritancegene regulation
- 17. Multiple ChoiceIn eukaryotes, a cluster of proteins that assemble on the promoter is called thetranscription initiation complexcontrol elementactivatorprotein blobby thing
- 18. Multiple ChoiceIn eukaryotes, proteins that help the RNA polymerase bind to the promoter for transcriptiontranscription factorstopoisomeraseregulatory genesactivators
- 19. Multiple ChoiceA distal control region that activators bind to are bent to contact mediator proteins and form the transcription initiation complexenhancerspromotersrepressorstranscription factors
- 20. Multiple ChoiceIn embryonic development, the process by which cells specialize is calleddifferentiationmorphogenesiscell divisionendoplasmic reticulum
- 21. Multiple ChoiceIn embryonic development, the physical process of an organism developing its shape is calleddifferentiationmorphogenesiscell divisiontopoisomerase
- 22. Multiple Choicedifferentiation and morphogenesis are controlled by internal transcription factors, proteins and organelles in the cell... this is calledcytoplasmic determinantsinductive signalsendosymbiotic theoryepigenetic inheritance
- 23. Multiple Choicedifferentiation and morphogenesis are controlled by external factors, such as contact and signals from neighboring cells... this is calledcytoplasmic determinantsinductive signalsendosymbiotic theoryepigenetic inheritance
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