Ga biologist feeds cultured islet cells radioactive cysteine amino acids that get incorporated into newly synthesized proteins. the signal peptide of proinsulin (the sequence that directs it to the rough er) does not contain any cysteines. where would radioactive insulin be found?

one of the most common forms of pain or discomfort we feel during strenuous exercise is a burning sensation in our lungs or muscles that goes away shortly after we cease the activity. this is caused by a build-up of lactic acid.

. ph changes the ability of them he enzyme to dissolve in water.