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- 1. Multiple ChoiceMost gene regulation happens at which step along the way?translationtranscriptionsignal transductionDNA replication
- 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 ChoiceA protein that binds to the operator and blocks the RNA polymeraseregulatorrepressoractivatorcorepressor
- 4. Multiple ChoiceIn the lac operon model the genes within the operon will be expressed if:lactose is absent in the cellglucose is present in the celllactose is present in the cell
- 5. Multiple Choice
Why are insertion and deletion mutations so harmful?They change all of the codons from the mutation on down the line, which changes the amino acid sequenceThey insert things that an organism doesn't need.They often delete things that organisms need.Insertion and deletions are not any more harmful than substitution mutations. - 6. Multiple ChoiceIdentify the SUBSTITUTION mutation from the following DNA sequence:
ATG CCA AATATG TCA AATATG CCT AAA TATC CA ATATG CCA AAT - 7. Multiple ChoiceIn eukaryotes, proteins that help the RNA polymerase bind to the regulatory region for transcription are called ____________.transcription factorstopoisomeraseregulatory genesactivators
- 8. Multiple ChoiceWhat is the name given to part of a DNA molecule that codes for a protein?GlucoseChromosomeGenePhosphate
- 9. Multiple ChoiceWhat does the lactose do to the Operon?Blocks transcription because of the energy it providesAllows the repressor to be unbind from the Operator.The lactose binds the lactose and stops transcriptionAllows for the transcription to speed
- 10. Multiple ChoiceWhich of the following statements regarding mRNA is correct?Exons are included in the protein sequence, while introns are left outIntrons are included in the protein sequence, while exons are left outExons and Introns can both be included or left out depending on the proteinExons and Introns are both part of the mRNA sequence, but only exons are part of the rRNA and tRNA
- 11. Multiple ChoiceHow can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?The two different cells become mutatedThe proteins expressed in each cell are differentThey actually have different DNA in the two types of cells.The genome of the different cells changes
- 12. Multiple ChoiceWhat is the role of operons in prokaryote gene expression?It makes the genes prokaryotes be turned onIt accounts for the regulation of gene activity in response to the needs of the cellsTo make DNA for the geneTo make the gene turn of and off
- 13. Multiple ChoiceWhat structure of this molecule binds with the mRNA molecule?Amino AcidtRNAAnticodonCodon
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