Which of the following substances is lipophilic and crosses the placenta from the fetus?
a. Conjugated bilirubin
b. Unconjugated bilirubin
c. Lumirubin
d. Biliverdin
ANSWER-b. Unconjugated bilirubin is lipophilic and crosses the placenta easily. Conjugated bilirubin and its derivatives are lipophobic and do not cross the placenta. Lumirubin is a photoisomer of bilirubin created by phototherapy.
Ans B