Your answer would be... B. The climate on Earth has changed over time.
<span>He discovered a new type of medicine that could treat infections.
Hope this helps!
-Payshence xoxo</span>
No. they were all joined together and then they separated
Molecules are defined as the smallest particles of a chemical compound or an element, and are made up of atoms. Cells are made up of semi permiable membranes that only allow selected materials to move in or out of the cell, therefore due to the big size of molecules compared to atoms the membrane doesn't allow their passage in the cell. Therefore the cell doesn't allow most molecules to diffuse passively to the cell. Secondly, molecules that can enter the cell requires specific carriers carriers that will enable entry of small molecules in the cell.
I believe its D) transported to other parts of the cell by the endoplasmic reticulum from ribosomes