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Origin Of Life Ch 3
Test Description: Origin of life
Instructions: Answer all questions to get your test result.
1) The more accepted theory of moon's origin is
A
that a planet sized object struck the Earth sending material into orbit that eventually became the moon
B
that the moon was a planet flung from another galaxy by a supernova that happened to fall into Earth's orbit
C
that the moon was a passing asteroid, captured by Eath's gravity
2) It is theorized that the atmosphere formed
A
only after Earth cooled enough to form a crust
B
when Earth was formed
C
only in the last 40,000 years
3) It is theorized that the oceans formed
A
only in the last 40,000 years
B
when the atmosphere formed
C
only after Earth cooled enough for water to accumulate on Earth's surface
4) Scientists theorize that the formation of the ocean
A
was caused by the generation of oxygen
B
created the atmosphere required for terrestial life to form
C
was helpful, but not critical to the formation of life
5) The most compelling theory that life began in the oceans is
A
the oceans are still a primodial soup
B
completely without fossil evidence
C
based on how scientists interpret the fossil record
6) according to theory, that first molcular building blocks of life
A
were caused by lightening striking the ocean
B
formed with the big bang
C
are readily formed under certain conditions by natural processes
7) Scientists theorize that non living chemicals became life when
A
volcanic activity and electricity randomly shock a protein structure
B
none of the answers are correct
C
a large, stable molecule formed by chance and became capable of reproducing itself
8) abiogenesis is
A
both answers are correct
B
exactly the opposite of spontaneous generation
C
the origin of life from non living matter
9) a ___________ is an organisms that relies on consuming chemical compounds. An _______ is an organisms that can create organic chemicals from inorganic compounds and an external energy source
A
autotroph, mitochondria
B
autotroph, heterotroph
C
heterotroph, autotroph
D
heterotroph, mitochondria
10) Oxygen is improtant to life because it allows organisms to use chemical energy more effeciently
A
true
B
false
*select an answer for all questions
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