Physiology 1 Ch-4,5
Physiology 1 ch-4,5
1. ___________ is a term which describes a membrane that allows only certain molecules to penetrate it.
A. Selective permeable
B. Permeable
C. Porous
D. Counter transport
2. Active Transport
A. Utilizes energy
B. Cannot transport molecules against a concentration gradient.
C. Cannot be saturated
D. Requires cofactors
3. The Rate of diffusion is influenced by
A. The concentration gradient
B. Membrane permeability
C. Membrane surface area
D. All of the choices are correct
4. Cells placed in hypotonic solutions will
A. Decrease in volume
B. Increase intracellular solute concentration
C. Increase in volume
D. Loose water to the solution
5. Protein carrier mediated transport of molecules display
A. Specificity
B. Competition
C. Saturation
D. All the choices are correct
6. Facilitated diffusion is unable to transport molecules against a concentration gradient.
True False
7. The Na+/K+ pump transports ______ into the cell and ____ out of the cell per cycle.
A. 3Na+, 2K+
B. 2Na+, 3K+
C. 3K+, 2 Na +
D. 2K+, 3 Na +
8. The Na+/K+ pump
A. Is an example of primary active transport
B. Generates a positive membrane potential
C. Actively transports 2 potassium ions out of the cell
D. Actively transports 3 sodium ions into the cell
9. Secondary active transport often occurs as a coupled transport process.
True False
10. Poisoning the Na+/K+ pump would cause the volume of the cell to_______
A. Increase
B. Decrease
C. Remain the same
11.Secondary active transport
A. Utilizes energy directly
B. Often utilizes symport proteins
C. Always uses the influx of sodium ions
D. Is only important in the kidney.
12. What molecules pass information from the polar regulatory molecules receptor to activate the enzymes that produce cAMP?
A. Paracrines
B. G-proteins
C. GTP
13. Which form of membrane transport is being described? The passage of molecules into cells with out passing through the plasma membranes structural matrix.
A. Diffusion
B. Osmosis
C.
1. ___________ is a term which describes a membrane that allows only certain molecules to penetrate it.
A. Selective permeable
B. Permeable
C. Porous
D. Counter transport
2. Active Transport
A. Utilizes energy
B. Cannot transport molecules against a concentration gradient.
C. Cannot be saturated
D. Requires cofactors
3. The Rate of diffusion is influenced by
A. The concentration gradient
B. Membrane permeability
C. Membrane surface area
D. All of the choices are correct
4. Cells placed in hypotonic solutions will
A. Decrease in volume
B. Increase intracellular solute concentration
C. Increase in volume
D. Loose water to the solution
5. Protein carrier mediated transport of molecules display
A. Specificity
B. Competition
C. Saturation
D. All the choices are correct
6. Facilitated diffusion is unable to transport molecules against a concentration gradient.
True False
7. The Na+/K+ pump transports ______ into the cell and ____ out of the cell per cycle.
A. 3Na+, 2K+
B. 2Na+, 3K+
C. 3K+, 2 Na +
D. 2K+, 3 Na +
8. The Na+/K+ pump
A. Is an example of primary active transport
B. Generates a positive membrane potential
C. Actively transports 2 potassium ions out of the cell
D. Actively transports 3 sodium ions into the cell
9. Secondary active transport often occurs as a coupled transport process.
True False
10. Poisoning the Na+/K+ pump would cause the volume of the cell to_______
A. Increase
B. Decrease
C. Remain the same
11.Secondary active transport
A. Utilizes energy directly
B. Often utilizes symport proteins
C. Always uses the influx of sodium ions
D. Is only important in the kidney.
12. What molecules pass information from the polar regulatory molecules receptor to activate the enzymes that produce cAMP?
A. Paracrines
B. G-proteins
C. GTP
13. Which form of membrane transport is being described? The passage of molecules into cells with out passing through the plasma membranes structural matrix.
A. Diffusion
B. Osmosis
C.