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Post by Admin on Wed Oct 14, 2015 3:58 pm

DNA quantification - Spectophotometry

1.The visible portion of the electromagnetic spectrum occurs between ___ nm and ___ nm.
A) 1, 10
B) 10, 300
C) 400, 740
D) 800, 1200
2.Which part of the spectrophotometer is adjusted to select the desired wavelength?
A) light source
B) filter
C) sample
D) photodetector


3.A blank contains the ___ but not the dissolved chemical.
A) solvent
B) solute
C) filter
D) absorption spectrum

4.Basically, what is the function of an absorption spectrum?
A) It converts light energy into electrical energy.
B) It is a graph of a chemical relating the absorbance to wavelength.
C) It is a graph of a chemical relating the absorbance to concentration.
D) It is the amount of radiation retained by a sample.
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Post by Ravindee on Sat Nov 21, 2015 5:22 pm

1) C) 400, 740

2) B) filter

3) A) solvent

4) B) It is a graph of a chemical relating the absorbance to wavelength.
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