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1. a. Place the following in the order in which they c. organic mole-
evolved: eukaryotic cell, prokaryotic cell, photosyn- cules - prokaryot-
thesis, organic molecules. ic cell - photosyn-
a. eukaryotic cell - prokaryotic cell - photosynthesis - thesis - eukaryotic
organic molecules cell
b. prokaryotic cell - eukaryotic cell - photosynthesis -
organic molecules
c. organic molecules - prokaryotic cell - photosynthe-
sis - eukaryotic cell
d. organic molecules - photosynthesis - prokaryotic
cell - eukaryotic cell
2. b. Which of the following statements is true concern- c. 1 and 2
ing LUCA? (1) LUCA was a cell. (2) All life on Earth
evolved from LUCA. (3) LUCA probably existed prob-
ably around 4.5 billion years ago.
a. 1 only
b. 2 and 2
c. 1 and 2
d. 1, 2, and 3
3. c. The RNA world hypothesis states that a. all of the above
a. early life was based on RNA as the first organic
molecule.
b. RNA evolved soon after the formation of the world.
c. the first cells were made of RNA and lipids.
d. all of the above
4. d. The "soup" of molecules refers to b. organic mole-
a. an ocean full of a mixture of many different sub- cules created from
stances. inorganic chemi-
b. organic molecules created from inorganic chemi- cals in Earth's ear-
cals in Earth's early atmosphere. ly atmosphere.
c. a Earth full of volcanic eruptions, thunder, and
lightning.
d. the classic evolution experiments of Campbell and
Chunky.
5. d. all of the above
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e. Early Earth
a. had a primitive atmosphere of ammonia, methane,
water vapor, and carbon dioxide.
b. lacked much oxygen gas.
c. probably had a very hot environment.
d. all of the above
6. f. Which of the following can be considered fossils? c. a 1 billion
a. a 1 billion year-old rock. year-old piece of
b. a 1 billion year-old piece of amber. amber with a prim-
c. a 1 billion year-old piece of amber with a primitive itive insect inside.
insect inside.
d. all of the above
7. g. "We are made of stardust" refers to b. the rotating
a. the dust of dead skin cells we shed every day. cloud of stardust
b. the rotating cloud of stardust that formed the plan- that formed the
ets. planets.
c. the gases in the stars that formed the gases in the
atmosphere.
d. the rotating cloud of stardust that formed LUCA
and all the organisms that evolved later.
8. h. Place the mouse, fruit fly, duck, and gorilla in order d. fruit fly - duck -
of their relatedness to humans, from least related to mouse - gorilla
most related.
a. mouse - fruit fly - duck - gorilla
b. fruit fly - mouse - duck - gorilla
c. gorilla - mouse - duck - fruit fly
d. fruit fly - duck - mouse - gorilla
9. a. Which division of time during Earth's history came c. The Late Pre-
first? cambrian
a. The Paleozoic Era
b. The Cenozoic Era
c. The Late Precambrian
d. The Mesozoic Era
10. b. Which period was the "golden age of dinosaurs"? b. the Jurassic Pe-
a. the Triassic Period riod
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b. the Jurassic Period
c. the Cretaceous Period
d. the Tyrannosaurus Period
11. c. Pangaea a. is a superconti-
a. is a supercontinent of all the major landmasses. nent of all the ma-
b. formed during the Mesozoic Era. jor landmasses.
c. allowed dinosaurs to roam all over the planet.
d. all of the above
12. d. The Permian extinction probably d. all of the above
a. occurred because photosynthesis stopped and the
planet cooled.
b. occurred at the beginning of the Mesozoic Era,
allowing the dinosaurs to evolve.
c. killed most life on Earth except for small reptiles
and mammals.
d. all of the above
13. e. The dinosaurs disappeared at the end of the c. Cretaceous Pe-
a. Triassic Period. riod.
b. Jurassic Period.
c. Cretaceous Period.
d. Mesozoic Period.
14. f. Which of the following did not occur during the b. Plants and
Carboniferous Period? animals evolved
a. The first amphibians left the water to live on land, adaptations to
but they had to return to the water to reproduce. dryness.
b. Plants and animals evolved adaptations to dry-
ness.
c. Widespread forests of huge plants left massive
piles of carbon that eventually turned to coal.
d. The first reptiles evolved.
15. g. When the dinosaurs went extinct ____________ b. 65, mammals
million years ago, the ____________ took over.
a. 65, reptiles
b. 65, mammals
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c. 145, mammals
d. 65, birds
16. h. Which of the following is not true about the Juras- d. The period end-
sic Period? ed with the dra-
a. The earliest birds evolved from reptile ancestors matic extinction
during this time. of small lizards,
b. The major groups of mammals evolved during this an important food
time. for the large di-
c. Flowering plants appeared for the first time. nosaurs.
d. The period ended with the dramatic extinction of
small lizards, an important food for the large di-
nosaurs.
17. a. Who is considered the "father of taxonomy?" b. Carolus Lin-
a. Charles Darwin naeus
b. Carolus Linnaeus
c. Gregor Mendel
d. Francis Crick
b. Which of the following
18. b. Which of the following is in the correct order, from b. kingdom - phy-
most inclusive to most exclusive? lum - family -
a. kingdom - family - order - species species
b. kingdom - phylum - family - species
c. phylum - class - species - genus
d. order - class - genus - species
19. c. The three domains of life include b. Eukaryota
a. Prokaryota
b. Eukaryota
c. Bacteriota
d. all of the above
20. d. Phylogeny refers to a. the evolutionary
a. the evolutionary history of a group of related organ- history of a group
isms. of related organ-
b. a group of organisms that includes an ancestor and isms.
all of its descendants.