a molecule is the smallest unit of a compound
Yes.
write down how many atoms are present in the molecus. B) sodium chloride nacl.
Yes, molecules are formed when two or more atoms bond together through chemical bonds. These atoms can be of the same element, like in O2 (oxygen gas), or different elements, such as in H2O (water). The arrangement and types of atoms in a molecule determine its properties and behavior.
the main difference is that active transport requires ATP (energy), where as osmosis and diffusion do not. However, there are a lot of other differences in what they actually do to the cell.