Transcript Goal 3.05 Quiz 1

Given that early atmospheric conditions on
Earth contained no oxygen, which organisms
would most likely have appeared first?
A. aerobic, single-celled organisms
B. anaerobic, single-celled organisms
C. aerobic, multi-celled organisms
D. anaerobic, multi-celled organisms
If a student were interviewing Charles Darwin
regarding his research, which question would
most likely be asked?
A. How does DNA change with evolution?
B. What is your opinion of the Big Bang Theory?
C. Do you believe an individual can change his or
her genetic makeup?
D. Why do Galapagos finches have different shaped
beaks?
In order for bacteria to develop a resistance to
antibiotics, natural selection must occur. What
must be present for natural selection to occur?
A. nutrition
B. variation
C. a large number of bacteria
D. a wide variety of antibiotics
While on the Galapagos Islands, Charles Darwin studied
different species of finches. He found the finches to have
several physical traits in common; however, the beak
structure of the finches was different. Which conclusion did
Darwin most likely draw from these observations?
A. The finches had the same diet.
B. The finches lived in the same habitat.
C. The finches were probably related through common
ancestry.
D. The finches were brought to the Islands by various
travelers.
How do scientists explain the increase in oxygen in
Earth’s early atmosphere?
A. Microbes produced oxygen through
photosynthesis.
B. Ozone was dissolved, creating free oxygen in the
atmosphere.
C. Greenhouse gas molecules were separated into
atmospheric oxygen.
D. Water condensed as the Earth cooled, creating
water-filled depressions.
Scientists drill a core sample from the bottom of a
lake and find evidence of evolution in the core.
Which did the scientists most likely find that helped
them use relative dating to support the theory of
evolution?
A. rocks covered by sand and silt
B. a soil profile of surrounding soil types
C. living organisms dating to prehistoric times
D. an undisturbed, layered fossil history of life in the
area
Two squirrel species live on opposite sides of the
Colorado River. How could a population of Abert squirrels
produce the Kaibab species of squirrels across the
Colorado River?
A. The Abert squirrels crossbred with gray squirrels,
resulting in the creation of the Kaibab species.
B. Temporal isolation and behavioral isolation caused the
Abert squirrels to separate into two colonies.
C. Abert and Kaibab squirrels look and act differently, but
genetically are the same.
D. The river’s formation separated the two populations of
squirrels and created separate gene pools.
Which statement most accurately explains
radioactive dating of fossils?
A. Fossils are crushed and then exposed to
radioactive x-rays to determine their age.
B. Fossils are dated by testing radioactive isotopes
in the rocks in which they are embedded.
C. Fossils are collected in layers of rock in the order
in which they were deposited and are then exposed
to radioactive emissions.
D. Fossils are exposed to radioactive isotopes,
compared to similar fossils in museums, and added
to the timeline where they belong.
Scientists believe some bacteria have developed
resistance to modern drugs. Which best explains
why this has occurred?
A. overuse of antibiotics
B. underuse of antibiotics
C. exposure to solar radiation
D. exposure to sudden temperature change
As Darwin traveled among the Galapagos Islands,
he found finches whose type of beak determined
the type of food they ate. A finch eating nuts would
have a short, strong beak while a finch eating
nectar would have a longer beak. Which
mechanism of evolution would cause this to
happen?
A. adaptive radiation
B. convergent evolution
C. reproductive isolation
D. stabilizing selection