Duffusion of particles througha membrane by means of a carrier molecule is called?
A. Pinocytosis
B. Osmosis
C. Facilitated Diffusion
D> Dialysis - ANSWER A. Pinocytosis
Diffusion requires?
A. a semipermiable membrane
B. A concentration gradient
C. Ions
D. None of the above - ANSWER D. None of the above
All of the following are examples of passive transport except? - ANSWER A.
Filtration
B. Osmosis
C. Endocytosis
D. Dialysis
C. Endocytosis
A Saline solution that contains a higher concentration of salt than red blood cells
would be?
A. Isotonic
B. Hypotonic
C. Hyptertonic
D. Hydrostatic - ANSWER C. Hypertonic
Materials can be moved from a low concentration to high concentration through?
A. Facilitated diffusion
B. Filtration
C. Osmosis
D. Active Transport - ANSWER D. Active Transport
Which of the following is not true of diffusion?
A. Uses cellular energy
B. Can occur in living and non-living cells
C. May occur both into and out of the cells
D. Energy course is cellular - ANSWER A. Uses cellular energy
, A membrane carrier structure attracts a solute to a binding site, changes shape, and
releases the solute on the other side of the cell membrane. This describes the
process of?
A. Endocytosis
B. The sodium and potassium pump
C. Channel-mediated transport
D. Carrier- mediated transport - ANSWER D. Carrier-mediated transport
The physical process by which water and solute move through a membrane when
hydrostatic pressure gradient exists across the membrane is the process of?
A. Dialysis
B. Osmosis
C. Diffusion
D. Filtration - ANSWER D. Filtration
Which is not true about the sodium and potassium pump?
A. It uses cellular energy
B. Sodium Moves into the cell and potassium moves out of the cell.
C. A carrier system is used
D. It can move substances against their concentration gradient - ANSWER B.
Sodium Moves into the cell and potassium moves out of the cell.
Which is true about te sodium potassium pump?
A. Two sodium ions are taken in the cell
B. Three sodium ions are taken out of the cell
C. Three potassium ions are taken into the cell
D. Two potassium ions are taken out of the cell. - ANSWER C. Three potassium
ions are taken into the cell
Two solutions of different concentrations of glucose are separated by a membrane
that allows both glucose and water the pass through. When dynamic equilibrium is
reached, there will be:
A. no movement of water
B. Movement of glucose but not water
C. Movement of water but not glucose
D. An even exchange of material across the membrane - ANSWER D. An even
exchange of material across the membrane
Phagocytosis is an example of
A. Exocytosis
B. endocytosis
C, Passive transport
D. faciliated diffusion - ANSWER B. endocytosis