Answer:
D. direct the building of different protein molecules
Explanation:
The correct answer is eukaryotic cells.
Microscopic subunits within the cell represent the organelles found only in complex eukaryotic cell. The communication between those organelles via signal molecules are also a good example of the functioning of eukaryotic cell.
Eukaryotic cell is a cell that contains a nucleus and organelles, and is enclosed by a plasma membrane.
2010: the census of marine life is completed.
2011: Mariana Trench exploration
2012: first solo dive into the Mariana Trench. hope this helps. :)