Multiple Choice
After a carbon atom leaves Earth's atmosphere as part of a carbon dioxide molecule, where can it go next in the carbon cycle?
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4. Biomolecules
Carbon
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Using modern equipment, a former graduate student of Stanley Miller recently reanalyzed the sample results of volcano simulation experiments that Miller conducted along with his classic experiment described in the text. This reanalysis did which of the following?
A
Contradicted Miller's earlier experimental results and provided more support for an undefined life force as the way organic molecules are made in nature
B
Revealed the formation of the same amino acids that Miller initially observed but in a more purified form
C
Greatly expanded Miller's earlier findings by uncovering the traces of cell-like entities being formed in the volcano simulation experiments
D
Identified additional organic compounds that had not been found by Miller
Verified step by step guidance1
Understand the context of the problem: Stanley Miller's experiment was designed to simulate early Earth conditions and test the chemical origins of life by producing organic compounds from inorganic precursors.
Recognize the significance of reanalyzing Miller's samples: Modern equipment allows for more precise and sensitive detection of compounds, potentially identifying substances that were not detectable with the technology available during Miller's time.
Consider the possible outcomes of the reanalysis: The reanalysis could either confirm, contradict, or expand upon Miller's original findings by identifying new compounds or providing more detailed information about the compounds initially detected.
Evaluate the options given in the problem: The reanalysis did not contradict Miller's results or support an undefined life force, nor did it reveal cell-like entities. Instead, it identified additional organic compounds.
Conclude that the reanalysis identified additional organic compounds that were not found by Miller, expanding the understanding of the types of organic molecules that could be formed under simulated early Earth conditions.
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