What is the primary source of protein in your diet?

An easy way to calculate the amount of energy available at each level is to what?

What enzyme is most important for dna replication and why?

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?