Use the three-letter shorthand notations to name all the isomeric tripeptides that can be made from serine, tyrosine, and glycine. each amino acid will be used once in each tripeptide. enter your answers separated by commas. use alphabetic order.

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.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false