Which valence have the greatest tendency to form ions? a. +1 b. -1 c. +2 d. -2 e. +3 f. -3 g. +4 h. -4

What is used to keep track of the gamates and possible offsprings combination

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.

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?