Molecules move in and out freely from high to low concentration

Active Transport - requires chemical energy because the process of transport is the movement of biochemicals from areas of lower concentration to higher concentration.

Passive Transport - does not require energy because the process of transport is the movement of biochemicals from areas of higher concentration to lower concentration. 

Types of transport:
Active Transport - endocytosis, cell membrane/sodium-potassium pump and exoctyosis

Passive Transport - diffusion, facilitated diffusion, and osmosis.

Types of particles transported:
Active Transport - proteins, ions, large cells, complex sugars

Passive Transport - anything soluble in lipids, small monosaccharides, water, oxygen, carbon dioxide, sex hormone, etc.

It may have some of the same features that it’s mother does but, it may have some of the same features that it’s father has as well.