| 单词 | nitrogen base |
| 释义 | nitrogen baseor nitrogenous basenounChemistry, Biochemistry. a nitrogen-containing organic compound that has the chemical properties of a base, especially a pyrimidine or purine: Four nitrogen bases are present in a DNA molecule. Words nearby nitrogen basenitrofurantoin, nitrogelatin, nitrogen, nitrogenase, nitrogen balance, nitrogen base, nitrogen cycle, nitrogen dioxide, nitrogen distribution, nitrogen equivalent, nitrogen fixation Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Scientific definitions for nitrogen basenitrogen base One of the nitrogen-containing purines (adenine or guanine) or pyrimidines (cytosine, thymine, or uracil) found in the nucleic acids DNA and RNA. The bases may be attached to a sugar (deoxyribose in DNA, ribose in RNA) to form nucleosides.The addition of a phosphate to a nucleoside results in the formation of a nucleotide, which is the basic constituent of nucleic acids. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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