vux see xgjs Flashcards

1
Q

ratio of the mass of the given particle to the numver of electrostatic charge units

A

mass- to- charge ratio (m/z)

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2
Q

dimensionless ratio measured by the mass analyzer

A

m/z

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3
Q

tge ion produces by removal of a single electronfrom the analyte molecule

A

molecular ion

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4
Q

the precursor ion

A

molecular ion

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5
Q

the most intense peak and is assigned a relative intensity of 100%

A

base peak

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6
Q

the intensity of a given peak relative to that of the base peak

A

relative intensity

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7
Q

relative abundance of a given ion compared to the sum of the abundances of all ions

A

percent total ionization

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8
Q

the ability to differentiate closely spaced peaks

A

resolution

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9
Q

means that 2 adjacent peaks in a mass spectrum are resolved sufficiently

A

unit resolution

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10
Q

can also be interpreted by a peak width definition

A

resolutiom

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11
Q

what is fwhm

A

full width at half maximum intensity

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12
Q

molecular weight calculated summation of tge atomic massesnof the lightest isotope

A

nominal molecular weight

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13
Q

TRUE/FALSE
Molecular ion should not be called the parent ion

A

TRUE

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14
Q

soft, gas-phase, continuous source for small molecules

A

field ionization source

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15
Q

large scale study of proteins

A

proteomics

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16
Q

large scal study of pathways and networks of lipids

A

lipidomics

17
Q

-systematic study of the unique chemical fingerprints
-study of their small molecule metabolite profiles

A

metabolomics

18
Q

study of genomes

A

genomics

19
Q

study of transcriptomes

A

transcriptomics

20
Q

analyses seek to understand how a collection of glycans relates to a particular biological event

A

glycomics