Q: You are presented with the quiz "Proteins are assembled on small floating what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "ribosomes are small organelles where proteins are made" and "proteins are assembled on floating ribosomes". So, what's the best answer to the question?

Select from the following.
(1). boats;
(2). red blood cells;
(3). proteins;
(4). gastropod shells;
(5). plates;
(6). an object;
(7). graptolites;
(8). Organelles.;
A:
(8).