Transcript Membrane & Transport Review

Cell Membrane & Transport
Censational Review

Name the molecule with a
polar “head” and two
nonpolar “tails”.

PHOSPHOLIPID

What 2 two words can be used to describe a
double layer of phospholipids?
LIPID BILAYER

What general term can be given to proteins
that are embedded in the plasma membrane
and reach from outside the cell to inside the
cell?

INTEGRAL PROTEIN

What is the name of the protein that is used
most often in facilitated diffusion?

CHANNEL PROTEIN

Which proteins are responsible for transmitting
information from the cells environment to the
interior of the cell?

RECEPTOR PROTEINS

Give an example of a marker protein.

GLYCOPROTEIN OR GLYCOLIIPID

What kind of molecules are secreted by
various glands in your body that like to hook
up with receptor proteins?

HORMONES
The movement of particles from an area of low
concentration to an area of high concentration
is known as…

ACTIVE TRANSPORT

When a solute goes from a high concentration
to a low concentration in a solvent, without
energy, it is called ______ OR _______

DIFFUSION or PASSIVE TRANSPORT

If the solute concentration in a cell is the same
as the solute concentration outside the cell, the
cell is in a state of …….

EQUILIBRIUM
The name for a mixture of solutes and solvents

SOLUTION
The more plentiful substance that dissolves a
solute is known as
THE SOLVENT
The movement of water molecules across a
membrane in response to the concentration of
a solute is known as
OSMOSIS
When the surrounding environment of a cell has
a greater concentration of solutes than inside
the cell, what type of solution is the cell in?
HYPERTONIC
What is the term used to describe when some
solutes are able to pass through a membrane
and others are not?
SELECTIVELY PERMEABLE
When a cell has a greater concentration of
solutes in it than in its surrounding
environment, the cell is in what type of
solution?

HYPOTONIC
What is the name for a substance that dissolves
into another substance?
SOLUTE
What passive transport process uses channel
proteins?
FACILITATED DIFFUSION
What type of solution is it when the
concentration of solutes in the cell and its
environment are the same?
ISOTONIC
When a cell uses energy to transport a particle
through a membrane against a concentration
gradient it is known as
ACTIVE TRANSPORT
What process uses energy and enables a cell to
engulf molecules too large to pass through
protein channels?
ENDOCYTOSIS
When a cell engulfs solid particles it is called
PHAGOCYTOSIS
When a cell gets rid of waste inside of its
vacuoles by having the vacuoles fuse with the
plasma membrane and dumping the excretions
outside the cell, it is known as
EXOCYTOSIS
The name when a cell uses energy to engulf
liquids is
PINOCYTOSIS
The maintaining of constant internal conditions,
even within cells, is known as
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HOMEOSTASIS

Proteins that do not span the entire lipid
bilayer are known as

PERIPHERAL PROTEINS