Promoter (genetics) - Quiz
  • 1. What is the primary function of a promoter in genetics?
A) To initiate the transcription of a single RNA transcript
B) To encode the primary structure of amino acids
C) To store genetic information for long-term inheritance
D) To terminate the process of DNA replication
  • 2. Where are promoters typically located in relation to a gene?
A) Upstream on the DNA
B) Inside the protein coding region
C) Downstream on the antisense strand
D) Within the ribosomal subunits
  • 3. What enzyme is responsible for synthesizing RNA by binding to the promoter?
A) Ligase
B) RNA polymerase
C) Helicase
D) DNA polymerase
  • 4. What is the approximate length range of a promoter?
A) 1–10 base pairs
B) 5000–10000 base pairs
C) 100–1000 base pairs
D) 10–50 base pairs
  • 5. Which proteins bind to promoters to recruit RNA polymerase?
A) Ribosomes
B) Transcription factors
C) Sigma factors only
D) DNA helicases
  • 6. What factor is associated with RNA polymerase in bacteria for promoter recognition?
A) TFB
B) Sigma factor
C) TBP
D) RNA polymerase II
  • 7. How many different factors are at least required for RNA polymerase II to bind to a eukaryotic promoter?
A) Three
B) Fifty
C) At least seven
D) Only one
  • 8. Which elements are contained within archaeal promoters?
A) Sigma factors
B) Only silencers
C) BRE and TATA elements
D) Only enhancers
  • 9. What proteins recognize the BRE and TATA elements in archaea?
A) Sigma factor
B) RNA polymerase II
C) Enhancer binding proteins
D) TFB and TBP
  • 10. Besides promoters, what other regulatory regions can direct transcription?
A) Ribosomes and tRNAs
B) Enhancers, silencers, and insulators
C) Only termination sequences
D) Introns and exons
  • 11. What percentage of random sequences in E. coli can serve as active promoters without evolution?
A) About 60%
B) Almost 100%
C) About 10%
D) Less than 1%
  • 12. What percentage of random sequences in E. coli can evolve levels comparable to the lac promoter with one mutation?
A) About 90%
B) About 60%
C) About 10%
D) About 5%
  • 13. What determines the sequence of a promoter?
A) The gene, transcription product, RNA polymerase type, and species
B) The size of the cell nucleus
C) The number of ribosomes in the cell
D) The age of the organism
  • 14. What type of molecules can be produced via transcription initiated by a promoter?
A) Only proteins
B) mRNA, tRNA, or rRNA
C) Only DNA strands
D) Only lipids
  • 15. What causes a promoter to be induced?
A) Changes in temperature only
B) The removal of DNA
C) The binding of DNA polymerase
D) Changes in abundance or conformation of regulatory proteins
Created with That Quiz — the math test generation site with resources for other subject areas.