Cell Transport 1
The cell membrane only lets some things through--the name that explains this concept is...
"semi-permeable"
or selectively permeable
equilibrium
a form of diffusion that involves the movement of water across a cell membrane
osmosis
_______________ are areas in the cell membrane that allow larger molecules to pass through
protein channel
Cell transport involves the movement of substances across the ____________
cell membrane
A pasta strainer is an example of what kind of permeability?
a. impermeable
b. selective permeability
c. total permeability
selective permeability
During simple diffusion, substances pass between the _____________ of the cell membrane
phospholipids
If the inside of a cell is 46% water and the outside of the cell is 46% water, does osmosis occur?
yes
What is the scientific term for large molecules?
macromolecules
The form of energy that cells use during active transport
ATP
____________ transport requires energy.
active transport
The cell membrane is constructed of two layers with the hydrophilic heads facing outward and the hydrophobic tails facing inward. Another name for this concept is...
Phospholipid Bilayer
During Passive transport, substances move across the cell membrane from _______ concentration to ______ concentration.
Low
_____ and _________ make up the cell membrane.
phospholipids and proteins
During active transport, substances move from ________concentration to __________ concentration.
low
high
__________ is the process in which a cell engulfs a large substance by wrapping the membrane around it and taking it in.
endocytosis
___________ is the process of a cell releasing waste by pushing a vesicle through the cell membrane.
exocytosis
Passive transport is generally called _______.
diffusion
The heads of a phospholipid are ___________, meaning they are attracted to water.
hydrophilic
If the inside of cell contains 23% water and the outside of the cell contains 57% water, which direction will water move in order to reach equilibrium?
into the cell