Petrifaction means turning to
mud.
dust.
stone.
mold.
1 points
QUESTION 2
______ developed the concept of half-life.
Ernest Rutherford
Leonardo da Vinci
James Hutton
none of the above
1 points
QUESTION 3
Which of the following is an isotope pair used to determine the age of rocks?
uranium-lead
rubidium-strontium
potassium-argon
all of the above
1 points
QUESTION 4
What do periods make up?
epochs
eras
eons
none of the above
1 points
QUESTION 5
Which of the following is an eon in the time scale?
Phanerozoic
Proterozoic
Archean
all of the above
1 points
QUESTION 6
Which of the following happened during the Precambrian Era?
the first prokaryotic cells
the first eukaryotic cells
development of photosynthesis
all of the above
1 points
QUESTION 7
Which of the following is the earliest era of Earth's geologic time scale?
Cenozoic
Mesozoic
Precambrian
Paleozoic
1 points
QUESTION 8
A.I. Oparin hypothesized that cellular life was preceded by a period of
volcanic eruptions.
chemical evolution.
extinction.
none of the above
1 points
QUESTION 9
_____ systems have a membrane that separates the internal chemicals from the external chemical environment.
Living
Chemical
both a and b
none of the above
1 points
QUESTION 10
During which period did the presence of stromatolites decline?
Cambrian
Proterozoic
Jurrasic
Cretaceous
1 points
QUESTION 11
What did all known Proterozoic animal fossils not have?
shells
DNA
both a and b
none of the above
1 points
QUESTION 12
______ do not have a nucleus and membrane-bound organelles.
Prokaryotes
Eukaryotes
both a and b
none of the above
1 points
QUESTION 13
Which of the following is a main type of vertebrate?
reptile
fish
mammals
all of the above
1 points
QUESTION 14
Which of the following is a period in the Paleozoic Era?
Devonian
Cambrian
Permian
all of the above
1 points
QUESTION 15
The first ______ evolved during the Ordovician period.
mammals
fish
reptiles
none of the above
