Which two cell structures work together in the
process of protein synthesis?
(1) nucleus and chloroplast
(2) ribosome and vacuole
(3) nucleus and ribosome
(4) mitochondrion and cell membrane

Wind energy is plentiful in regions with vast open spaces it is a non polluting renewable resource what could be an economic factor that makes the use of this resource less feasible then non renewable resource even in such regions

Nucleic acid certain protein cell membranes certain carbohydrates

In the water cycle , when does water undergo a chemical change