question_answer 37)

      The soap molecule has a (a) hydrophilic head and a hydrophobia tail          (b) hydrophobic head and a hydrophilic tail (c) hydrophobic head and a hydrophobic tail       (d) hydrophilic head and a hydrophilic tail

Answer:

                  (a) A soap molecule is made up of two parts: A long hydrocarbon part and a short ionic part  group. The long hydrocarbon chain is hydrophobic (water repelling) and ionic portion is hydrophilic (water attracting).