31 Oct 2021
Problem 37
Page 572
Section 22.3: Critical Thinking Questions
Chapter 22: Prokaryotes: Bacteria and Archaea
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31 Oct 2021
Background and context
Nitrogen is an essential element in the living cells as it is the building block of protein and nucleic acid, naturally, without it no cell can live. In the air nitrogen is 78%, but this nitrogen is a noble gas and is unreactive. This gaseous form cannot be used directly by plants without undergoing a transformation. Leguminous plants, like soybean, have nodules in their root, where a bacteria named rhizobia reside that can transfer atmospheric nitrogen into ammonia that can be used by the plant.
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