What is the main function of the nucleolus? a. it produces cell adhesion proteins that are then exported to the cell membrane. b. it is the site of photosynthesis in photosynthetic cells. c. its function is not yet known. d. it produces enzymes that are then exported to the lysosomes. e. it is the site of ribosome-subunit synthesis?

Competition occurs between species when

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

What controls activities within a eukaryotic cell?