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 molecule ['mɒlikju:l]   添加此单词到默认生词本
n. 分子, 些微

[化] 分子

[医] 分子




    molecule
    [ noun ]
    1. (physics and chemistry) the simplest structural unit of an element or compound

    2. <noun.substance>
    3. (nontechnical usage) a tiny piece of anything

    4. <noun.substance>


    Molecule \Mol"e*cule\, n. [Dim. fr. L. moles a mass: cf. F.
    mol['e]cule. See 3d {Mole}.]
    1. One of the very small invisible particles of which all
    ordinary matter is supposed to consist.

    2. (Physics) The smallest part of any substance which
    possesses the characteristic properties and qualities of
    that substance, and which can exist alone in a free state.

    3. (Chem.) A group of atoms so united and combined by
    chemical affinity that they form a complete, integrated
    whole, being the smallest portion of any particular
    compound that can exist in a free state; as, a molecule of
    water consists of two atoms of hydrogen and one of oxygen.
    Cf. {Atom}.

    1. For Merck, Mevacor is the culmination of almost 10 years of research begun with the discovery of a tiny molecule in a bit of fungus back when the importance of fighting cholesterol was still unproved.
    2. The synthetic molecule, he said, prevented the virus from spreading from the infected T cells to the uninfected cells.
    3. CD4 is a natural molecule that's found on the surface of some blood cells.
    4. Factor VIII, considered the largest and most complex molecule ever made with gene-splicing technology, now is extracted from human blood for use by hemophiliacs.
    5. Besides, he adds, "The 'wrong' molecule could work as well as the 'right' molecule.
    6. Besides, he adds, "The 'wrong' molecule could work as well as the 'right' molecule.
    7. We look at strength, oral activity, duration of action, the toxicology and genotoxicity. 'We also make sure that the molecule is metabolised in man.
    8. According to their report, they were studying rat genes for a known family of chemical "receptors," a class of molecule that receives the chemical messengers, or neurotransmitters, involved in communication among brain cells.
    9. Altman and Cech have now independently discovered that RNA is not only a molecule of heredity but can also serve as a biocatalyst.
    10. DNA, shorthand for deoxyribonucleic acid, is the protein molecule that contains the genetic pattern for each individual. Except for red blood cells, DNA is present in every cell of the body.
    11. Research on this molecule could give important clues to the existence of life beyond the Earth.
    12. The result often is chemical chaos, as each atom or molecule robbed of an electron becomes a free radical itself and instantly seeks electrons from still other atoms and molecules.
    13. "Then a drug company can synthesize lots of chemicals and check them out on receptor A and receptor B, and then gradually sculpt a molecule that fits receptor A and not receptor B, and then you have a super drug," he said.
    14. DNA, or deoxyribonucleic acid, is a protein molecule found inside each cell.
    15. He said what is detected as a fragrance may actually be caused by the chemical reaction of the OBP mixed with the fragrance molecule.
    16. It fills the interstitial space That holds each molecule in place; And if we grow a trifle stout, We ripple as we move about.
    17. The researchers essentially laid the two copies side by side and began sifting through them, molecule by molecule.
    18. The researchers essentially laid the two copies side by side and began sifting through them, molecule by molecule.
    19. DNA has been imaged with scanning tunneling microscopes before, but only after the molecule had been shadowed with metal.
    20. He added that his team has made only microscopic amounts of the new molecule so far but "feels strongly" that larger quantities can be made fairly easily.
    21. By combining a toxin with the CD4 molecule, the researchers are, in effect, creating a guided missile that attacks only those cells that are infected.
    22. These compounds trick the AIDS virus into "committing suicide" by slipping a dummy molecule into its DNA, scientists have said.
    23. Scientists talk of one day being able to make ultrasmall electronic circuitry, with dimensions of just one atom or molecule.
    24. DNA, or deoxyribonucleic acid, is a complex molecule found mainly in the nucleus of living cells and plays a vital role in heredity.
    25. He said the molecule does that by separating the positively and negatively charged parts of atoms and holding them about one-billionth of a centimeter apart at opposite ends of the ladder-like molecule.
    26. He said the molecule does that by separating the positively and negatively charged parts of atoms and holding them about one-billionth of a centimeter apart at opposite ends of the ladder-like molecule.
    27. The synthetic molecule can capture and store 83 percent as much energy as its natural counterparts, Gust said.
    28. Back at the Texas City refinery, most of the Mexican load is being transformed molecule by molecule into gasoline.
    29. Back at the Texas City refinery, most of the Mexican load is being transformed molecule by molecule into gasoline.
    30. As a result the protein produced by the cystic fibrosis patients was missing a single amino acid molecule that was present in the same protein from healthy persons.
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