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Home Q & A Board Biology-Related Homework Help General Biology
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katty katty
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12 years ago
Bacteria and insects are exposed to pesticides and antibiotics ( toxins). In response, some bacteria and insects adapt, or change to resist the toxins designed to destroy them. The scientific community explains that drug- resistance is proof of the evolution of strains of bacteria. The new "superbugs" withstand powerful drug regimes and chemicals they would have succumbed to in the past

Resistance can be explained using evolutionary theory. Organisms adapt by developing additional capabilities, functional structures, or other complexities that enable them to resist the antibiotics and chemicals

There is a change or something new in the capability structure or complexity of the organism.Apply modern evolutionary theory to explain the recent appearance of antibiotic resistant bacteria populations of clostridium difficile (c. difficile)?
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katty Authorkatty
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12 years ago
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#2
Donated
12 years ago
The current bacteria did not just say "hay i am going to change" mutations in the DNA of the bacteria that would have normal been nothing to worry about before pesticides antibiotics have aided the bacteria to survive "better" and therefore their offspring that inherit the same mutation will survive "better" and maybe some of the offspring will have another mutation that helps or hurts them in the current environment and therefore will evolve or die. this process goes on and on until some bacteria are so different than the ones they were before that they become a different bacteria, and there-go have evolved.
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#3
12 years ago
Antibiootic reisitance is often due to a reduction of informaiton in an organism. An antibioltic may attack a particular enzyme and a bacteria may muted by loss of informaiton and be missing that enzyme. So is it a super bug or super wimp?

A better theory is that the original organisms had the informaiton within them to adapt usually through loss of informtian not new information

In some cases an organism in plant and animal worlds appear to be able to trigger reacitons in their offspring to resist a pesticide and in a few cases there appears to be generit triggers where a parent creature is exposed to a condition and it triggers a result in the child. In these cases it is not new information or even information lost, but an adaptability built into the plant or animal to adapt to differnt environments as they change

These are different from the standard evolutionary answers and would be more int he creationary direction
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#4
12 years ago
Evolution is false, except to microevolution.  8) These bacteria are examples of microevolution.
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#5
12 years ago
Quote from: ochorios (12 years ago)
Evolution is false

I hope you're kidding Face with Stuck-out Tongue
Biology!
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