The structure of a carbohydrate(sugars) is Carbon, Hydrogen, and Oxygen.
D) Endocytosis is a transport mechanism that utilizes energy.
Endocytosis is an active transport, a biological process in which <span>molecules from outside the cell (proteins for example) are passed through the cell membrane and put into the cell. This process requires energy.
The other transport mechanisms, osmosis, diffusion and facilitated diffusion are processes that do not utilize energy. </span>
Usually by the neck or the metal piece of where you put your eye.
Correct answer: B. oxygen
The answer B - unicellular prokaryotes
