The Origin of Life

Endosymbiosis gave rise to

• golgi bodies
• chloroplasts and mitochondrea
• ribosomes and nuclei
• the rough and smooth endoplasmic reticulum

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The two extant species that are closely related to each other are __.

• A and B
• B and C
• C and D
• D and E

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Miller and other scientists have shown that:

•  life on early Earth required material from space
• cells survived in the primitive atmosphere
• amino acids and sugars could be produced from inorganic molecules 
• simple cells can be produced in a laboratory

In natural selection, the selective agent is the

• humans
• mutations
• breeders
• environment

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Charles Darwin called the ability of an organism to survive and reproduce in its specific environment 

• diversity.
• evolution
• adaptation. 
•  fitness.

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Which of the following was probably not present in the atmosphere of the primitive Earth? 

• methane
• oxygen
• water
• carbon dioxide

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Miller and other scientists have shown that:

•  life on early Earth required material from space
• cells survived in the primitive atmosphere
• amino acids and sugars could be produced from inorganic molecules 
• simple cells can be produced in a laboratory

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Which is in the correct order that these processes evolved?

• anaerobic -> photosynthetic -> aerobic 
• photosynthetic -> anaerobic -> aerobic
• aerobic -> photosynthetic -> anaerobic
• aerobic -> anaerobic -> photosynthetic

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What 'building blocks of life' were made in the Miller Urey experiment?

• amino acids
• nucleic acids
• glucose
• lipids

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Which scientist(s) tested the primordial soup model by using an electrical spark to produced amino acids from the molecules believed to be present on early Earth?

• Oparin-Haldane
• Miller-Urey
• Pasteur
• Spallanzani