<span>Two types of digestion: Extracellular and Intracellular.
Extracellular is the digestive process that occurs outside the cells, ie outside the body.
Intracellular is the process of digestion that takes place inside several cells in digestive vacuoles.</span>
Answer: The zona pellucida is formed as the follicle becomes a secondary follicle. False
Explanation: As the primary follicle increases in size, adjacent connective tissue organise themselves into a capsule called Theca folliculi. Follicular cells divides actively to produce a stratified layer around the oocyte.
Subsequently, fluid filled spaces appear around the follicular cells which coalesce to form a single large cavity called ANTHRUM. After formation of anthrum, it becomes secondary follicle. The primary follicle becomes surrounded by a covering of amorphous acellular glycoprotein material called Zonal pellucida.
<span>It's main function is to produce ATP, the energy currency of the cell.
The mitochondria take fuel (glucose) and essentially burns it. The energy given off by oxidizing the fuel is harnessed by causing ions to move across a membrane, kind of like pumping water. The ions then flow down through a protein which synthesizes ATP much like the water then flows down through a dam to generate electricity.</span>
