OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the movement of large molecules from the inside of the cell to the outisde of the cell using channel proteins.
|
|
|
the movement of large molecules from the inside of the cell to the outisde of the cell membrane vesciles.
|
|
|
the movement of large molecules from the outside of the cell to the inside of the cell using membrane vesciles.
|
|
|
the movement of large molecules from the outside of the cell to the inside of the cell using channel proteins.
|
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: -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-3: -The term “endocytosis” was coined by Christian deDuve in 1963 to include both the ingestion of large particles (such as bacteria) and the uptake of fluids or macromolecules in small vesicles. The former of these activities is known as phagocytosis (cell eating) and the latter as pinocytosis (cell drinking).