1-Which of the following statements about x-ray crystallography are true? (Selec

Question

1-Which of the following statements about x-ray crystallography are true? (Select all statements that are TRUE)

a-All atoms scatter x-rays equally.

b-The basic experimental data are relative intensities and positions of scattered electrons.

c-Only crystallized proteins can be analyzed.

d-The x-ray beam is scattered by the protein sample.

e-X-ray crystallography is the only technique which can determine the three-dimensional structure of a protein.

2-Which of the following techniques can give information on the size of a protein?(select all that apply)

Mass spectrometry

SDS-PAGE

Native PAGE

Size exclusion chromatography

Explanation / Answer

1.b,c and e.

2.SDS-PAGE and Size exclusion chromatography.

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