Earth is a closed system. true or false

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?

Which of the following is a feature of all cells? o a. all cells have a nucleus. o b. all cells have dna for at least part of their life cycle. het . o c. all cells are spheres. o d. all cells have a rigid cell wall.

Aclient with dysmenorrhea has been prescribed naproxen 1250 mg po b.i.d. what is the nurse's best action?