• 2022-06-01 问题

    Through their experiments with DNA from the bacterium Escherichia coli, Meselson and Stahl showed that DNA replication is A: conservative.; B: dispersive; C: duplicative.; D: semi-conservative 

    Through their experiments with DNA from the bacterium Escherichia coli, Meselson and Stahl showed that DNA replication is A: conservative.; B: dispersive; C: duplicative.; D: semi-conservative 

  • 2022-06-09 问题

    What type of technique is FTIR spectroscopy? ( ) A: A dispersive technique B: An emission technique C: An absorbance technique D: A UV-Vis technique E: A reflectance technique

    What type of technique is FTIR spectroscopy? ( ) A: A dispersive technique B: An emission technique C: An absorbance technique D: A UV-Vis technique E: A reflectance technique

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