Diazotrophs, enzyme ,nitrogenase, catalyzes the addition of hydrogens to nitrogen

Nitrogen fixation is carried out by the enzyme nitrogenase, which are found in microbes. Microorganisms that fix nitrogen are bacteria called diazotrophs.  The removal of oxygen or the addition of hydrogen.

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a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

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examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).