
Biology 2nd Semester Review
Authored by Cassidy Snyder
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
A population of bacterial is treated with hand sanitizer. Because of genetic variation in the population, what is a possible outcome?
The population will grow quickly.
All of the bacteria are already resistant.
They will get better at obtaining a food source.
Some may be resistant and survive.
2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
One of the biggest ways that a species evolves is because some organisms with some traits survive and reproduce better than others. This process is known as
natural selection.
convergent evolution.
coevolution
sexual selection.
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Genes for traits that help an organism be more successful reproductively can be expected to
cause it to evolve into a new species.
become more common in the future.
cause the extinction of the species.
eventually be eliminated by natural selection.
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
An adaptation is
any trait an organism possesses.
how an organism evolves during its own lifetime.
a gene an organism has.
a trait that helps an organism survive in its environment.
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Genetic diversity is ultimately/mainly the result of
meiosis.
viruses.
mutations.
reproduction.
6.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which of the following is not an example of evolution?
Horses becoming taller and faster over millions of years.
All species of tortoises in the Galapagos islands descending from a common ancestor.
Human brains becoming larger over time.
A caterpillar going through a change into a butterfly.
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which of the following does not increase genetic variation?
Mutations
Gene flow
Mitosis
Crossing over
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