Barbara has fallen and dislocated her shoulder. the doctor knows he is going to have to cause her a lot of pain while he puts her shoulder back into its proper position. he gently braces her arm and just before resetting the shoulder, he pinches barbara hard on the arm. how will this affect her pain when he puts her shoulder back into position?

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.