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Question 24 (3.4 points) What structural feature do the two hormones shown have in common? OH OH HO Both have alcohol functional groups Both have ketone functional groups Both are steroids There are no structural features in common Question 25 (3.4 points) Which compound cannot exist as a pair of optical isomers? OH H3 C - C - CH 2 CH3 HO H3C-C-CH3 H OH O H,C-C-COZH NH2 C H; C-C-CO2H H