Is the term for the amount of time it takes a nucleus to decay to half of its original amount. half life isotope radioactive

This is the amino acid cysteine. circle the amine group, put a box aroundthe carboxylic acid group and use a different colored pencil/pen to circle the sidechain (r group). h o | ||nh2— c- c-oh | ch2 | sh

The largest unit within which gene flow can readily occur is a

Which of the following statements is true of cells