Manipulating laboratory tissue cultures with hormones is one thing; using hormones to treat human beings, however, is contingent on whether hormones that (i) ________ in the laboratory can affect (ii) __________ organisms, and in predictable ways.
Blank (i) Blank (ii)
A. stir D. whole
B. work E. similar
C. fail F. cellular
Answer is A, D
Can someone tell how?