Alaboratory animal may eat any one of three foods each day. laboratory records show that if the animal chooses one food on onetrial, it will choose the same food on the next trial withaprobability of 50 percent, and it will choose the other foods onthe next trial with equal probabilities of 25 percent.

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.

Cells destroy body cells infected by a virus or bacteria.

What is the ecological role of food chains and food webs