How do bacteria develop resistance to drugs

How do bacteria develop resistance to drugs

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  1. (D) It fails to consider whether all bacteria now on Earth could have arisen from transported Martian bacteria.

    Explanation:

    The author says that no bacterial strain on Earth is different enough to have arisen on different planets, without take into account that it is possible that bacteria on our planet had not developed by their own means. Therefore, all bacteria on our planet could evolved from those that traveled on the meteorite from Mars.

  2. B

    Explanation:

    If we were to treat the bacterial population with that specific antibiotic, only the resistant bacteria will be able to multiply; the antibiotic selects for them. These bacteria can now increase in numbers and the end result is a population of mainly resistant bacteria

  3. B:Helps bacteria survive extreme conditions and later develop into fully functional bacterial cells

    Explanation:

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  4. The correct answer is - Development of simple bacteria→RNA formation→DNA formation

    Explanation:

    According to the hypothesis and researchers, it seems to confirm that RNA was the first genetic or hereditary material that was present in the simple form of bacteria developed first.

    RNA is the molecule responsible for the origin of life on the earth and evolved all the required processes and methods for carrying and expressing the genetic information of an organism before DNA. DNA is evolved from RNA molecules of simple bacteria.

  5. D. The bacteria developed resistance to the antibiotics.

    Explanation:

    On day 4, only 5 percent of the bacteria survived in the patient's body. These surviving bacteria most likely had a natural resistance to the antibiotics. If the patient had continued taking the antibiotics, the antibiotics along with the patient's immune system defenses would have most likely killed off the remaining resistant bacteria. However, the patient stopped taking the antibiotics on day 5. This allowed the surviving bacteria to reproduce and repopulate the patient's body with a strain of antibiotic-resistant bacteria.

  6. Bacteria gain resistance to drugs because of mutations (permanent and random changes to their DNA) which means they have changed DNA coding, giving them the ability to resist the drug fighting them off. As a result, they survive and reproduce. Over time, more and more bacteria are generated as the DNA code for resistance is passed on over generations. This results in bacteria having the ability to resist drugs. This is particularly prevalent with antibiotics.

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