Which piece of evidence below (a-d) best supports the hypothesis that protein structure and function are correlated?
a) Denatured proteins can be renatured under the appropriate conditions.
b) An enzyme can catalyze a reaction at 37 °C but cannot catalyze the same reaction at 42° C.
c) Enzymes can consist of protein or RNA.
d) When the primary structure of an enzyme is altered its quaternary structure is always altered. You isolate a nucleic acid from a cell. How do you determine whether you have isolated DNA or RNA? a) Look for the phosphate groups. b) Look for double stranded portions in the two molecules. c) Look at the presence of carbon in the molecule. d) Look at the hydroxyl groups on the 3' carbon of the sugar. e) Look at the pyrimidine content.