THE CELL
TRANSPORT INTO AND OUT OF THE CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Active transport requires the cell to expend energy and passive transport does not
|
|
|
Active transport requires the cell to form vesicles, while passive transport is done only through osmosis
|
|
|
Active transport is the only form of transport that requires the use of carrier proteins
|
|
|
passive transport is the only form of transport that requires the use of carrier proteins
|
Detailed explanation-1: -The cell membrane maintains homeostasis in three main ways: Allowing for fluid movement of the membrane. Regulating osmosis, or the movement of water from high concentration to low concentration. Maintaining specific concentrations of ions.
Detailed explanation-2: -Types of active transport include ion pumps, such as the sodium-potassium pump, and vesicle transport, which includes endocytosis and exocytosis. Cell transport helps cells maintain homeostasis by keeping conditions within normal ranges inside all of an organism’s cells.
Detailed explanation-3: -The selective permeability of biological membranes to small molecules allows the cell to control and maintain its internal composition. Only small uncharged molecules can diffuse freely through phospholipid bilayers (Figure 2.49).
Detailed explanation-4: -By allowing some materials but not others to enter the cell, the cell membrane acts as a gatekeeper. The cell membrane also provides structural support to the cytoplasm, recognizes foreign material, and communicates with other cells, all of which contribute to maintaining homeostasis.