20. Which is an effective against that can be used to prevent spread of tubercul

Question

20. Which is an effective against that can be used to prevent spread of tuberculosis? a. chlorine aerosol b. UV light c. ethidium bromide d. thymine spray 21. Transduction uses what type of "mechanism to get DNA into the bacterial cell? a. a phage b. a double stranded DNA probe c. phenol d. a detergent 22. Antibiotic resistance (genetically) is commonly associated and transferred with/among bacteria through? a. ribosomes b. plasmids c. cell walls structures d. all of above 23. In conjugation, the connecting structure between the two cells (gram negative - G-) is called: a. pilus b. connector c. transfer device d. tubule

Explanation / Answer

the answers are as follows

20)B) UV light

21)A) a phage

22)B) plasmid

23)A) pilus

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