Two organisms that are closely related would have

completely different DNA sequence

how are bacteria becoming resistant to antibiotics?

by a genetic mutation/by acquiring resistance from another bacterium.

bacteria does not become resistant to antibiotics.

by wishing they were resistant.

antibiotic resistance does not exist.

how can you help prevent antibiotic resistance?

you can not prevent antibiotic resistance

Antibiotic resistant bacteria are a problem because:

we can't help people with those infections

they are not a problem, I love being sick

The term "antibiotic resistance" refers to bacteria that

evolve to survive in the presence of an antibiotic.

are weakened and destroyed by antibiotics.

What is the most likely reason why a person has to get vaccinated with the flu shot again the next year?

The flu virus reproduces quickly and accumulates mutations rapidly

People only have passive immunity to the flu for one year.

The immune system rejects the vaccine after a year.

The flu virus remains unchanged from year to year.

Why might it be helpful for a species to have a lot of variations?

If the environment changes, they might be better able to adapt

They can't be seen by predators

It is helpful in asexual reproduction

They don't recognize each other

If a sick person takes an antibiotic but it doesn't kill all of the bacteria causing the sickness, what might explain this?

Variations in the bacteria allowed some organisms to be less affected by the antibiotic?

Bacteria cannot be killed by antibiotics

You cannot cure a bacterial infection

Bacteria do not cause sicknesses

One female salmon can lay hundreds of eggs. Why doesn't the salmon population increase dramatically?

Most offspring do not grow up to reproduce

You look at two species and see very similar amino acid sequences. What does this likely tell you?

These animals have a common ancestor.

These animals are not likely related.

These animals are likely becoming one species.

Which statement correctly explains how resistance to penicillin appeared after a few years of its widespread use to fight bacterial infection?

some bacteria were resistant to penicillin and their population spread rapidly, without competition from bacteria that were killed by penicillin

in order to survive exposure to penicillin, bacteria developed a resistance to the drug

a few bacteria became resistant to penicillin, and through sexual reproduction , most bacteria acquired the resistance

penicillin never really successfully wiped out populations of bacteria, scientist did not use proper controls in their studies

A new chemical was discovered and introduced into a culture containing one species of bacteria. Within a day, most of the bacteria were dead, but a few remained alive. Which statement best explains why some of the bacteria survived?

They had a genetic variation that gave them resistance to the chemical.

They were exposed to the chemical long enough to develop a resistance to it.

They mutated and became a different species after exposure to the chemical.

They absorbed the chemical and broke it down in their digestive systems.

Which of the following is true about antibiotic-resistant bacteria?

A mutation results in antibiotic resistance

Because there are antibiotics in the environment, they become immune

They learn to fight the antibiotic

Which of the following is true about antibiotic-resistant bacteria?

Bacteria with antibiotic resistance are more likely to survive and reproduce

Over time, the entire population will become antibiotic resistant

Bacteria don't mutate as a result of exposure to the antibiotic

Mutations are important because they bring about

genetic variation needed for a population to evolve

death of the organism in which they develop

benefits for the individual, not for the population

Hardey-Weinberg equilibrium within a population

A horse and a donkey can successfully mate to produce offspring known as a mule. Mules are sterile . Would mules be classified as a species?

No, due to their inability to reproduce successfully.

Yes, mules have enough of their own traits to be considered a species.

Yes, the fact that have different number of chromosomes makes them a different species

No, mules are too similar to the parent species

Why would a population with a large amount of genetic variation be more likely to survive a severe climate change in its environment?

Some individuals will posses traits better suited to the new climate and be more likely to pass them on

Individuals will only create offspring well-suited to the climate change

The individuals would produce more offspring

Individuals better suited to the new climate will help less-suited individuals survive

antibiotic resistance natural selection

Authored by Jennifer Cartelli

Biology

9th Grade

NGSS covered

Used 42+ times

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31 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A medicine that kills bacteria

antiviral

antibiotic

anti-fungal

antiacid

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

mutation

resistance

antibiotic

pesticide

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

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

Tags

NGSS.MS-LS4-4

NGSS.MS-LS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A change in DNA is a ...

clone

protein

accident

mutation

Tags

NGSS.MS-LS3-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Viruses are

easily killed

destroyed by antibiotics

nonliving

different kinds of bacteria

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Evolution is

change in a population over many generations

New organisms are born

sudden change in population

gradual change in environment

Tags

NGSS.MS-LS4-4

NGSS.MS-LS4-2

NGSS.MS-LS4-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A mutation caused a cat's claws to be longer than normal - it can hunt better now. The mutation will most likely...

will NOT be passed on to the next generation

will NOT have any survival value

will occur in a different population

will be passed on to the next generation

Tags

NGSS.MS-LS4-4

NGSS.MS-LS3-1

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antibiotic resistance natural selection

A medicine that kills bacteria

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

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?

A change in DNA is a ...

Viruses are

Evolution is

A mutation caused a cat's claws to be longer than normal - it can hunt better now. The mutation will most likely...

Two organisms that are closely related would have

A bacterial infection may be treated with antibiotics, but a virus cannot

how are bacteria becoming resistant to antibiotics?

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