Life Science Review 4.1 Question Preview (ID: 11162)


Exchange With The Environment. TEACHERS: click here for quick copy question ID numbers.

What molecules can get through the cell membrane directly?
a) lipids
b) sugar
c) water
d) protein

____________ allow small particles in and out of the cell
a) lipid channels
b) tv channels
c) sugar channels
d) protein channels

Diffusion is the movement of particles across a membrane from a ____ concentration to a ____ concentration
a) high; high
b) low; low
c) low; high
d) high; low

Which is not a form of passive transport
a) osmosis
b) none of the choices
c) facilitated diffusion
d) simple diffusion

__________ is the movement of small particles across a membrane with the use of energy
a) passive transport
b) active transport
c) exocytosis
d) endocytosis

If red blood cells are placed in a solution of salt water, the water concentration outside the cell will be___ and water will leave the cell
a) low
b) none of the choices
c) balanced
d) high

Large particles come into the cell through ___________
a) endocytosis
b) active transport
c) passive transport
d) exocytosis

Large particles leave the cell through
a) endocytosis
b) active transport
c) passive transport
d) exocytosis

Energy is needed to move particles from an area of _____ concentration to an area of ____ concentration
a) high; high
b) low; low
c) low; high
d) high; low

The cell membrane is made of
a) phospholipids
b) sugars
c) water
d) all of the choices

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