LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Exocytosis is the movement of
A
any type of substance from outside the cell to the inside of the cell.
B
very large substances from outside the cell to the inside of the cell.
C
any type of substance from inside the cell to the outside.
D
very large substances from inside the cell to the outside.
Explanation: 

Detailed explanation-1: -Exocytosis is a form of active transport through which large molecules are moved from the interior to the exterior of the cell. Vesicles are packaged within the cell and transported to the cell membrane, where their phospholipid bilayers fuse. This allows the contents to be released outside the cell.

Detailed explanation-2: -During exocytosis, the Golgi complex packages macromolecules into transport vesicles that travel to and fuse with the plasma membrane. This fusion causes the vesicle to spill its contents out of the cell.

Detailed explanation-3: -A large particle, however, cannot pass through the membrane, even with energy supplied by the cell. There are two primary mechanisms that transport these large particles: endocytosis and exocytosis.

Detailed explanation-4: -Exocytosis is a process for moving large molecules out of the cell to the cell exterior. Commonly, these macromolecules originate in storage vacuoles inside the cell and are moved to the exterior after an appropriate signal for this action.

There is 1 question to complete.