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Concept explainers
To determine:
The impulse that causes human to capture nitrogen from the air and pump it into the nitrogen cycle.
Introduction:
Nitrogen is an important component in proteins, many vitamins,
To determine:
Some of the consequences of human activities on the nitrogen cycle.
Introduction:
Nitrogen is an important component in proteins, many vitamins, nucleotides, and nucleic acids. The nitrogen cycle represents a pathway through which nitrogen from its primary reservoir as nitrogen gas in the atmosphere passed to much smaller reservoirs of ammonia and nitrate in soil and water, through different trophic levels, and back to its primary reservoirs.
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Chapter 29 Solutions
Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
- Label the steps that contribute to the nitrogen cyclearrow_forwardIn the nitrogen cycle what are the organisms that break down nitrates and nitrites into nitrogen gas and return nitrogen to the atmosphere?arrow_forwardIn terms of the nitrogen cycle and movement of electrons, what is the difference between nitrogen fixation and assimilatory nitrate reductionarrow_forward
- Define the following terms:a. nitrogen fixationb. nitrogenasec. nitrogen assimilationd. amino acid poole. nitrogen cyclearrow_forwardNitrifying bacteria participate in the nitrogen cycle mainly by(A) converting nitrogen gas to ammonia.(B) releasing ammonium from organic compounds, thusreturning it to the soil.(C) converting ammonium to nitrate, which plants absorb.(D) incorporating nitrogen into amino acids and organiccompoundsarrow_forwardexplain the nitrogen cycle processarrow_forward
- In the nitrogen cycle, ? Occurs when nitrogen gas is converted to form usable to plants, often by nitrogen-fixing ?arrow_forwardWe have seen that energy is essential for life on earth. All organisms need energy to maintain their cellular processes. There are two basic ways of generating energy de novo, at the base of food webs. Describe the two primary ways that autotrophic organisms generate energy, including the original source of energy and the primary organisms that carry out each process.arrow_forwardIn the nitrogen cycle the Assimilation process is a metabolic reaction: anabolic, catabolic, endergonic, exergonic, heterotrophic or autotrophic.arrow_forward
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