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Unit 5: History Of Life On Earth Review
Test Description: Semester 2, Unit 5 Review
Instructions: Answer all questions to get your test result.
1) Which of the following provided a hypothesis as to how the universe began?
A
the antimattertheory
B
the collision theory
C
the gravitational theory
D
the big bang theory
2) Which of the following is the main evidence of life in the early universe?
A
remains in amber
B
photosynthetic bacteria
C
rock impressions
D
dinosaur fossils
3) Which of the following best describes how embryological evidence supports the idea that life changes over time?
A
some animals exhibit structures that are no longer used for any purpose
B
some animals exhibit similar biological proteins
C
some fossils exhibit similar structures, possibly due to a common ancestor
D
some animals exhibit similar stages in embryonic development
4) Which of the following would have resulted from the functions of prokaryotes on early Earth?
A
Earth's oceans grew larger
B
less carbon became present in Earth's soil
C
less oxygen gas became present in the atmosphere
D
more oxygen gas became present in the atmosphere
5) Which of the following describes how DNA provides evidence to support that life changes over time?
A
some animals exhibit structures that are no longer used for any purpose
B
some animals exhibit similar stages of embryonic development
C
some animals exhibit similar structures, possibly due to a common ancestor
D
some animals exhibit similar biological proteins
6) Which of the following was most likely not present in creating the fatty acids of early Earth's waters of the past?
A
phosphorus
B
hydrogen
C
nitrogen
D
ammonia
7) Which of the following correctly describes where scientists believe early Earth's water came from?
A
atmospheric nitrogen converted into early water vapor which was later pressurized into liquid
B
dust storms caused disturbances in the atmosphere, causing rain
C
collisions of comets released water
D
the atmospheric water vapor condensed
8) Which of the following is used as evidence in supporting the idea that life changes over time?
A
the similarities in body systems such as the nervous and circulatory systems
B
the big bang theory
C
the time period in which an embryo develops
D
the existence of homologous structures
9) How did Charles Darwin provide evidence that evolution occurs?
A
He sailed around the world on the Beagle making observations.
B
He compared two groups of finches to illustrate natural selection.
C
He bred turtles to show their adaptations.
D
He used DNA to show where adaptations come from.
10) It is estimated that only one in a thousand sea turtles make it from eggs to adults. What is this an example of?
A
overproduction
B
survival of fit individuals
C
variation
D
none of the above
11) What do all members of a biological species have in common?
A
They have identical physical characteristics.
B
They live in the same geographical location.
C
They are members of the same population.
D
They can interbreed and produce fertile offspring.
12) Certain types of atoms break down at a known rate. Scientists can measure the amounts of the broken down products present in a sample to calculate its age. What is this technique called?
A
speciation
B
natural selection
C
radiometric dating
D
the fossil record
13) Which era is known as the Age of Mammals?
A
Mesozoic
B
Cenozoic
C
Precambrian
D
Paleozoic
14) According to scientists, which of the following is an example of the first living organisms that dominated Earth's surface?
A
heterotrophs
B
eukaryotes
C
prokaryotes
D
trilobites
15) Which stage is the last stage of speciation?
A
The populations are isolated and thus do not interbreed.
B
The populations become totally separated from one another.
C
The populations interbreed successfully.
D
The populations become adapted to different environments and eventually become so different that they cannot interbreed.
*select an answer for all questions
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