BIO 1 - Cell Membrane And Function Question Preview (ID: 26506)


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Cell membranes are constructed mainly of
a) lipid bilayers
b) protein pumps
c) carbohydrate gates
d) free-moving proteins

The concentration of a solution is the
a) volume of its solute in a given volume of solution.
b) mass of its solute in a given mass of solvent.
c) mass of its solute in a given volume of solution.
d) mass of its solvent in a given volume of solute.

The function of the cell membrane is to
a) provide support to the cell.
b) provide protection to the cell.
c) regulate what enters and leaves the cell.
d) all of the above.

The process of moving particles across a selectively permeable membrane from areas of high concentration to low concentration is
a) active transport.
b) phagocytosis.
c) diffusion.
d) exocytosis.

The movement of water across a selectively permeable membrane is called
a) simple diffusion
b) facilitated diffusion
c) osmosis
d) hydrosis

Facilitated diffusion involves the movement of particles through
a) the lipid bilayer.
b) protein channels.
c) with the movement of water.
d) attached to carrier molecules.

Facilitated diffusion requires energy.
a) true
b) false
c)
d)

If a solution outside a cell has a higher concentration of solute than inside the cell, it is said to be
a) isotonic.
b) hypotonic.
c) hypertonic.
d) in equilibrium.

An example of active transport is
a) osmosis.
b) facilitated diffusion.
c) simple diffusion.
d) pinocytosis.

If a cell swells when placed in a solution, then relative to the cell the solution is
a) isotonic.
b) hypotonic.
c) hypertonic.
d) at equilibrium.

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