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Questions and Answers
What were the main components of Earth's atmosphere three to four billion years ago?
What were the main components of Earth's atmosphere three to four billion years ago?
- Hydrogen, helium, and nitrogen
- Ammonia, methane, and water (correct)
- Nitrogen, oxygen, and carbon dioxide
- Carbon monoxide, sulfur dioxide, and nitrogen
Which biological processes determine the atmospheric concentrations of reactive and unreactive gases?
Which biological processes determine the atmospheric concentrations of reactive and unreactive gases?
- Photosynthesis and Respiration
- Oxidation and Reduction
- Nitrogen Fixation and Nitrification (correct)
- Decomposition and Combustion
What is the primary form of nitrogen available in the atmosphere?
What is the primary form of nitrogen available in the atmosphere?
- NO2 (g)
- HNO3 (aq)
- N2 (g) (correct)
- NH3
What is the process by which atmospheric nitrogen is converted into the usable form ammonia (NH3)?
What is the process by which atmospheric nitrogen is converted into the usable form ammonia (NH3)?
How is ammonia converted into nitrate in the nitrogen cycle?
How is ammonia converted into nitrate in the nitrogen cycle?
Which enzyme is responsible for combining gaseous nitrogen with hydrogen to form ammonia in the process of nitrogen fixation?
Which enzyme is responsible for combining gaseous nitrogen with hydrogen to form ammonia in the process of nitrogen fixation?
What is the primary method through which the inert form of nitrogen gas is deposited into soils from the atmosphere and surface waters?
What is the primary method through which the inert form of nitrogen gas is deposited into soils from the atmosphere and surface waters?
Which type of bacteria is responsible for converting ammonia into nitrate in the nitrogen cycle?
Which type of bacteria is responsible for converting ammonia into nitrate in the nitrogen cycle?
What is the end product of industrial nitrogen fixation involving the reaction of N2 (g) and 3H2 (g)?
What is the end product of industrial nitrogen fixation involving the reaction of N2 (g) and 3H2 (g)?
What was the main component of Earth's atmosphere three to four billion years ago, according to the text?
What was the main component of Earth's atmosphere three to four billion years ago, according to the text?
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