EVERYDAY SCIENCE

SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Endocytosis is defined as
A
the movement of large molecules from the inside of the cell to the outisde of the cell using channel proteins.
B
the movement of large molecules from the inside of the cell to the outisde of the cell membrane vesciles.
C
the movement of large molecules from the outside of the cell to the inside of the cell using membrane vesciles.
D
the movement of large molecules from the outside of the cell to the inside of the cell using channel proteins.
Explanation: 

Detailed explanation-1: -Endocytosis is the process of capturing a substance or particle from outside the cell by engulfing it with th e cell membr ane. The membrane folds over the substance and it becomes completely enclosed by the membrane. At this point a membrane-bound sac, or vesicle, pinches off and moves the substance into the cytosol.

Detailed explanation-2: -Endocytosis is a type of active transport that moves particles, such as large molecules, parts of cells, and even whole cells, into a cell.

Detailed explanation-3: -Endocytosis is a general term describing a process by which cells absorb external material by engulfing it with the cell membrane. Endocytosis is usually subdivided into pinocytosis and phagocytosis.

Detailed explanation-4: -Cells use exocytosis to secrete molecules too large to pass through the cell membrane by any other mechanism.

Detailed explanation-5: -Exocytosis describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell. Both endocytosis and exocytosis are active transport processes.

There is 1 question to complete.