Unit 5: History Of Life On Earth Review Question Preview (ID: 37420)
Semester 2, Unit 5 Review.
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According to scientists, which of the following is an example of the first living organisms that dominated Earth's surface?
a) trilobites
b) heterotrophs
c) prokaryotes
d) eukaryotes
Which era is known as the Age of Mammals?
a) Cenozoic
b) Mesozoic
c) Precambrian
d) Paleozoic
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
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) variation
c) survival of fit individuals
d) none of the above
What do all members of a biological species have in common?
a) They live in the same geographical location.
b) They are members of the same population.
c) They have identical physical characteristics.
d) They can interbreed and produce fertile offspring.
How did Charles Darwin provide evidence that evolution occurs?
a) He compared two groups of finches to illustrate natural selection.
b) He bred turtles to show their adaptations.
c) He used DNA to show where adaptations come from.
d) He sailed around the world on the Beagle making observations.
Which of the following is used as evidence in supporting the idea that life changes over time?
a) the big bang theory
b) the existence of homologous structures
c) the similarities in body systems such as the nervous and circulatory systems
d) the time period in which an embryo develops
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) ammonia
d) nitrogen
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) the atmospheric water vapor condensed
c) collisions of comets released water
d) dust storms caused disturbances in the atmosphere, causing rain
Which of the following describes how DNA provides evidence to support that life changes over time?
a) some animals exhibit similar stages of embryonic development
b) some animals exhibit structures that are no longer used for any purpose
c) some animals exhibit similar structures, possibly due to a common ancestor
d) some animals exhibit similar biological proteins
Which of the following would have resulted from the functions of prokaryotes on early Earth?
a) less oxygen gas became present in the atmosphere
b) more oxygen gas became present in the atmosphere
c) less carbon became present in Earth's soil
d) Earth's oceans grew larger
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
Which of the following provided a hypothesis as to how the universe began?
a) the big bang theory
b) the gravitational theory
c) the antimattertheory
d) the collision theory
Which of the following is the main evidence of life in the early universe?
a) photosynthetic bacteria
b) rock impressions
c) dinosaur fossils
d) remains in amber
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.
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