RUQUAGUGA-3 5-GAAUGAAAUGUUAACC-3 5-GGGCAUUCC-3 cue 18. Which of the following ar
ID: 205031 • Letter: R
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RUQUAGUGA-3 5-GAAUGAAAUGUUAACC-3 5-GGGCAUUCC-3 cue 18. Which of the following are involved in the regulation of gene expression? A. transcription factors B. methylation of DNA and histones C. lifespan of mRNA D. splicing during RNA processing all of the above 19. Which of the following describes why high use of antibiotics can lead to the evolution of antibiotic-resistant strains of bacteria? A. Antibiotic use increases the chance that a mutation for resistance will occur. B. The ability of antibiotics to kill sensitive bacteria declines over time Antibiotic use eliminates bacteria sensitive to the antibiotic, leaving only resistant to reproduceExplanation / Answer
Answer 19 a)
Antibiotic use increased the chances that a mutation for resistance will occur.
It can be explained by Darwin's theory the survival of the fittest.
Bacteriae have evolved themselves to prevent the antibiotics to kill them.
Various methods are used by the bacteria to change their genetic composition.
For eg. Lateral Conjugation.. in this the DNA is transferred by the bacteria to one another. Other is when a bacteria dies it gives of it's genetic material to the other living bacteria.
When a bacteria becomes antibiotic resistant, the effect of antibiotics are nutralized by the bacteria. For eg. They don't let the antibiotic to break the cell wall or they pump out the antibiotics from the cell
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