2.3,4 please Thank you. 2 should be wrong. What is true about different bacteria
ID: 62231 • Letter: 2
Question
2.3,4 please Thank you.
2 should be wrong.
What is true about different bacterial promoters? (Choose the ONE best answer) All bacterial promoters bind sigma equally Some promoters can bind to RNA polymerase directly Some promoters are -weaker than others if they don't have the exact -35 and -10 sequences that sigma binds best Some promoters are made of amino acids instead of nucleotides Question 3 0.29 pts Regulation of transcription could be done efficiently in which of the following ways? (Choose ALL correct answers) u blocking the termination of transcription until the gene is needed u making initiation of transcription more likely when the gene is needed. u making termination of transcription more likely when the gene is needed. u blocking the initiation of transcription until the gene is needed. Question 4 0.28 pts Assume there is lactose in the cytoplasm of a bacterial cell. Which of the following is the BEST time for that cell to break lactose down into glucose and galactose molecules? (Choose the ONE best answer) ki when the cell is running out of ATP u when there is also lots of galactose in the cytoplasm u when there is also lots of ATP in the cytoplasm u when there is also lots of glucose in the cytoplasmExplanation / Answer
Q2. The right answer is C. Some promoters are weaker than others if they don’t have the exact -35 and -10 sequence that sigma binds to best.
Bacterial promoters have 2 conserved sequences one at -35 position and one at the -10 position. Since these sequences determine the sigma binding, variations in the promoters spacing and the sequences within the conserved regions influence the rate of binding of sigma factor.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.