Which of the following statements regarding anfinsen's denaturing experiments with ribonuclease a (rnase a) are valid? exposing the denatured protein to air oxidation and then dialysis to remove urea restored the protein to its original functionality. removing urea by dialysis and then allowing air oxidation of the denatured protein restored the protein to its original functionality. denaturing the protein with both urea and β-mercaptoethanol yielded an inactive protein. anfinsen concluded that protein folding is determined by its primary sequence.

B, C, and D

Explanation:

Anfinsen found that denaturing the protein with both urea and β-mercaptoethanol yielded an inactive protein.  

Removing urea by dialysis and then allowing air oxidation of the denatured protein restored the protein to its original functionality.

He concluded that protein folding is determined by its primary sequence.

A is false. Anfinsen removed the urea first and then allowed the enzyme solution to re-oxidize slowly in air.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

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