Section #: 22.4
Early Life on Earth
Practice Test
1.
The energy and nutrients necessary for the origin of life can be found near __________.
SC.D.1.4.3
a.
transform faults
b.
hydrothermal vents
c.
magma chambers
d.
trenches
Hint
2.
What were the type of life-forms that existed before the Proterozoic?
SC.D.1.4.3
a.
fungi
b.
prokaryotes
c.
eukaryotes
d.
algae
Hint
3.
__________ are the building blocks of proteins.
SC.F.1.4.1
a.
DNA and RNA
b.
Formaldehyde molecules
c.
Amino acids
d.
Cyanide molecules
Hint
4.
Which type of cell shown in the figure existed first?
SC.D.1.4.3
a.
A
b.
it is impossible to tell
c.
B
d.
both came into existence at the same time
Hint
5.
What did organisms of Earth's first 4 billion years have in common?
SC.D.1.4.3
a.
They breathed oxygen.
b.
They were multi-celled organisms.
c.
They were single-celled organisms.
d.
They were photosynthetic.
Hint
6.
What event caused the extinction of acritarchs near the end of the Proterozoic?
SC.D.1.4.3
a.
global warming
b.
outgassing
c.
formation of ozone
d.
the Varagnian glaciation
Hint
7.
Fossils of __________ from late Proterozoic rocks are found in all parts of the world.
SC.D.1.4.3
a.
the Burgess Shale fauna
b.
trilobites
c.
the Ediacaran fauna
d.
corals
Hint
