Which term describes the difference in the concentrations of a substance across a cells membrane

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?

Si units are the modern form of the

Identify the area on the image where the force of attraction is the strongest.