Sulfur occurs in all living matter primarily as a component of
A) fatty acids.
B) nucleotides.
C) amino acids.
D) carbohydrates.
Correct Answer:
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Q19: The region of the earth inhabited by
Q20: Biofilms are likely to be found in
Q21: Turning inorganic carbon into organic carbon is
Q22: Atmospheric nitrogen is
A) used directly by plants.
B)
Q25: Next to carbon and oxygen, the element
Q26: In many aquatic habitats, the growth of
Q27: Phosphorus is a component of
A) nucleic acids.
B)
Q28: The organisms that convert carbon dioxide into
Q29: Nitrifiers
A) are obligate anaerobes.
B) are chemolithotrophs.
C) convert
Q33: The organisms isolated from hydrothermal vents are
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