Cell Transport (3.4) Flashcards
The cell membrane Controls what enters
and exits the cell to maintain an internal balance called
____
homeostasis
Phosphate head is ___ (water loving)
_____ non-polar(water fearing)
polar
Fatty acid tails
The cell membrane is _____ as it Allows some
molecules in and keeps other molecules out
Selectively permeable
___: random movement of
particles from an area of high
concentration to an area of low
concentration.
Diffusion
Molecules in solution tend to slowly spread apart
over time. This is ____.
diffusion
\_\_\_\_\_: diffusion of specific particles through transport proteins found in the membrane
Facilitated diffusion
____: diffusion of
water through a
selectively permeable
membrane
Osmosis
_____: The solution has a lower concentration of
solutes and a higher concentration of water than
inside the cell.
Hypotonic
Water moves from the solution to inside the
cell): Cell Swells and bursts open (_____)!
cytolysis
______: The solution has a higher concentration
of solutes and a lower concentration of water than
inside the cell.
Hypertonic
Water moves from inside the cell
solution: Cell shrinks (____)!
Plasmolysis
____: The concentration of solutes in the solution
is equal to the concentration of solutes inside the cell.
Isotonic
(High solute; Low water)=
(Low solute; High water)=
Hypertonic
Hypotonic
In plants the pressure exerted on
the cell wall is called ______.
turgor pressure
cell uses energy
• actively moves molecules to where they are
needed
• Movement from an area of low concentration
to an area of high concentration
Active transport
