Which letter indicates a cell structure that directly controls the movement of molecules into and out of the cell?

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

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?

The solution inside a plant cell is approximately a 1% saline solution and a 21% nacl solution the ,cytoplasm of a plant cell will