Cell Membrane Flashcards
(14 cards)
Parts of the cell membrane
Cell membrane Proteins Lipid bilayer Carbohydrates Transport protein Phospholipids
The cell membrane regulates
What enters and what leaves the cell
What does the cell membrane do for the cell
Regulates what enters and leaves the cell
Provides protection and support for the cell
The proteins are embedded in the
Lipid bilayer
The lipid bilayer gives the membrane a flexible structure that forms a
Strong barrier between the inside and the outside of the cell
Many of the proteins form what to help move materials across the membrane
Channels and pumps
The carbohydrates serve as…
Identification makers to help individual cells to identify one another
Homeostasis:
A balance that organisms maintain through self-regulating adjustments
Cell membrane is also called…
A selectively permeable membrane or a semipermeable membrane
What can the cell membrane control
Can decide what can come into the cell
Can decide the speed they are allowed to enter
In the concentration gradient in the absence of other forces, materials will tend to…
Move from an area of high concentration to an area of lower concentration
When an equal amount of concentration has been achieved it is called
Equilibrium
Passive transport definition
No energy is being used to move molecules across the membrane
Diffusion in passive transport definition
The spreading out of molecules from a region of high concentration toa region of low concentration
