Life Science Review 4.1: Question Preview (ID: 11162)


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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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