Questions & Answers
Browse all 15 questions from the
Organic Chemistry in the Cosmos study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which simple organic compound, a major component of natural gas on Earth, makes up the vast majority of Titan's atmosphere?
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A
Ethane
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B
Methane
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C
Propane
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D
Acetylene
2
What complex organic molecules, often found in interstellar dust clouds, are considered potential precursors to life?
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A
Polycyclic Aromatic Hydrocarbons
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B
Polytetrafluoroethylene
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C
Polyvinyl chloride
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D
Polystyrene
3
The Murchison meteorite, which fell in Australia in 1969, is famous for containing which organic building blocks essential to life?
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A
Nucleic acids
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B
Amino acids
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C
Simple sugars
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D
Lipids
4
Which organic compound is believed to be the primary cause of the reddish-brown haze observed in the atmosphere of Saturn's moon, Titan?
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A
Tholins
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B
Fullerenes
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C
Glycine
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D
Benzene
5
Spectroscopic analysis of the interstellar medium has confirmed the presence of which basic organic molecule, a precursor to many others?
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A
Formaldehyde
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B
Glucose
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C
Citric acid
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D
Urea
6
Which planet in our solar system shows high concentrations of methane, which is thought to be replenished by either volcanic or biological processes?
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A
Venus
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B
Mars
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C
Mercury
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D
Neptune
7
What is the most abundant organic molecule detected in the gas clouds surrounding newborn stars?
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A
Methanol
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B
Acetic acid
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C
Ethanol
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D
Formic acid
8
Organic molecules known as carbonaceous chondrites are classified as what type of celestial object?
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A
Comets
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B
Asteroids
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C
Nebulae
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D
Galaxies
9
Which carbon-based molecule, found in cometary tails, is often used by astronomers to identify organic content in space?
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A
Cyanogen
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B
Neon
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C
Argon
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D
Xenon
10
What are the 'building blocks' of proteins that have been detected in various interstellar molecular clouds?
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A
Peptides
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B
Amino acids
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C
Fatty acids
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D
Monosaccharides
11
The dark, reddish material covering parts of the surface of Pluto is thought to be composed of what complex organic mixtures?
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A
Tholins
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B
Silicates
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C
Iron oxides
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D
Sulfates
12
Which simple organic molecule has been detected in the atmosphere of Venus, potentially hinting at non-biological chemical processes?
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A
Phosphine
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B
Methane
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C
Formaldehyde
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D
Ethane
13
What organic process occurs in space where small molecules like methanol are synthesized on the surfaces of interstellar dust grains?
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A
Surface-catalyzed grain chemistry
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B
Photosynthesis
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C
Nuclear fusion
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D
Cracking
14
Which organic molecule, often associated with the smell of rotten eggs, has been identified in the atmosphere of various icy moons?
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A
Hydrogen sulfide
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B
Methane
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C
Acetone
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D
Methanol
15
Which type of carbon allotrope, consisting of spheres of carbon atoms, has been detected in the interstellar medium?
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A
Fullerenes
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B
Graphite
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C
Diamond
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D
Graphene
