Biological resistance and Natural Selection

All bacteria have DNA. 

• true
• false

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If you go to a doctor and are prescribed antibiotics you probably have an illness cause by a 

• virus
• bacteria
• host cell
• macrophage

During natural selection, the organisms with the best adaptations..

• survive better in their environment
• have higher fitness
• pass down their traits more often
• All of these are correct

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People are making antibiotic resistance worse by:

• taking antibiotics only when they need them
• putting antibiotics into our food and environment
• not sharing antibiotics with others

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Which is the easiest way for a person to prevent microbial infections?

• Avoid contact with animals.
• Isolate themselves at home.
• Sterilize everything in the home.
• Wash hands frequently with hot water and soap.

A chemical that kills bugs and insects is a ...

• mutation
• resistance
• antibiotic
• pesticide

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NGSS.MS-LS2-1

A  population of cockroaches was sprayed with an insecticide.  Some cockroaches survived and produced a population of cockroaches that was resistant to this spray.  What can BEST be inferred from this example?

• species will adapt no matter what the environment
• environment has no effect on the survival of an organism
• Individuals with favorable variations survive and reproduce
• Insecticides cause mutations that are passed on to the next generation

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NGSS.MS-LS4-4

The ability of an organism to remain unaffected by a harmful agent in the environment

• chronic toxicity

• acute toxicity

• resistance

• monoculture

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Which of the following best describes how natural selection results in bacteria that are antibiotic resistant?

• When you take an antibiotic when you're sick, a few bacteria survive. These bacteria happen to have a random mutation that makes them resistant to the antibiotic. These bacteria survive and reproduce, eventually resulting in an antibiotic-resistant population.

• When you take an antibiotic when you're sick, the bacteria respond by mutating their DNA, making them resistant to the antibiotic. Therefore, an antibiotic-resistant population evolves.

• When you take an antibiotic when you're sick, it causes mutations in the bacteria DNA. Some of these mutations make the bacteria antibiotic-resistant. These bacteria now form a bacteria-resistant population.

• When you take an antibiotic when you're sick, it kills the bacteria, which allows a new species of bacteria to infect the body. Some of species are antibiotic resistant, thus a new population of antibiotic-resistant bacteria appears.

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The process by which favorable traits tend to increase in frequency over time is...

• ecological succession

• natural selection

• photosynthesis

• renewable energy

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