A 10.0-g sample of protein was hydrolyzed. A 3.0-mg portion of 14 C-labeled threonine, with specific


A 10.0-g scantling of protein was hydrolyzed. A 3.0-mg portion of 14C-labeled threonine, delay inequitable zeal of 1000 cpm/mg, was added to the hydrolysate. After mixing, 11.5 mg of guiltless threonine was isolated and set to enjoy a inequitable zeal of 20 cpm/mg. (a) What percentage of this protein is threonine? (b) Had 11C (t1/2 5 20.3 min) been used instead of 14C, how would the retort alter? Assume all numerical values are the identical as in sever (a) and that the gone-by era between the two inequitable zeal measurements was 32 min.