APHY. 201 Study Guide 3 Questions with Correct Answers
Question 1:
Passive processes of membrane transport
-Do not require energy
-Depend on substances moving down -concentration gradient
Answer:
-Membrane-bound vesicle must be released (vesicular transport)
Question 2:
what are the four factors that affect the rate of simple diffusion across the membrane?
Answer:
Two types: diffusion, osmosis
Concentration Gradient: The difference in concentration of the diffusing substance between
Question 3:
Surface Area: The total area available for diffusion. A larger surface area of the membrane
Answer:
Higher permeability to the substance results in faster diffusion.
Question 4:
Temperature: Higher temperatures increase the kinetic energy of molecules, which enhances
Answer:
allows more molecules to diffuse simultaneously, increasing the rate.
Question 5:
what additional factor distinguishes the kinetics of facilitated diffusion?
Saturation saturation added.
Diffusion
Answer:
their movement and thus speeds up diffusion.
the state or process that occurs when no more of something can be absorbed, combined with,
or the process by which molecules move from an area of higher concentration to an area of
lower
, Question 6:
Diffusion of water through a selectively permeable membrane Isotonic Solutionretaining its
normal shape because there is no net movement of water.Hypertonic Solution
solutionHypotonic Solution solution
Answer:
OsmosisA solution with the same concentration of water and solutes as inside a cell, resulting in
the cell A solution in which the concentration of solutes is greater than that of the cell that
resides in the A solution in which the concentration of solutes is less than that of the cell that
resides in the
Question 7:
Measurement in osmoles, human body fluids range 280-300 mOsm 5% Solution
dextroseHypotonic0.75% solution of NaCl Hypotonic10% Solution of NaCl Hypertonic8%
solution of Dextrose Hypertonic0.9% Solution NaCl Isotonic100 m0sm solution of ammonia
Hypotonic
Answer:
Osmolarity Measurement
Question 8:
Molecule like a hormone or neurotransmitter binding to a receptor
Answer:
Primary Messenger
Question 9:
Signaling molecule released into the bloodstream to regulate specific functions
Answer:
Hormone
Question 10:
Diffusion of water through a selectively permeable membrane Isotonic Solution
retaining its normal shape because there is no net movement of water.
Hypertonic Solution solution
Hypotonic Solution solution
Answer:
Osmosis
A solution with the same concentration of water and solutes as inside a cell, resulting in the cell
A solution in which the concentration of solutes is greater than that of the cell that resides in
the A solution in which the concentration of solutes is less than that of the cell that resides in
the
Question 1:
Passive processes of membrane transport
-Do not require energy
-Depend on substances moving down -concentration gradient
Answer:
-Membrane-bound vesicle must be released (vesicular transport)
Question 2:
what are the four factors that affect the rate of simple diffusion across the membrane?
Answer:
Two types: diffusion, osmosis
Concentration Gradient: The difference in concentration of the diffusing substance between
Question 3:
Surface Area: The total area available for diffusion. A larger surface area of the membrane
Answer:
Higher permeability to the substance results in faster diffusion.
Question 4:
Temperature: Higher temperatures increase the kinetic energy of molecules, which enhances
Answer:
allows more molecules to diffuse simultaneously, increasing the rate.
Question 5:
what additional factor distinguishes the kinetics of facilitated diffusion?
Saturation saturation added.
Diffusion
Answer:
their movement and thus speeds up diffusion.
the state or process that occurs when no more of something can be absorbed, combined with,
or the process by which molecules move from an area of higher concentration to an area of
lower
, Question 6:
Diffusion of water through a selectively permeable membrane Isotonic Solutionretaining its
normal shape because there is no net movement of water.Hypertonic Solution
solutionHypotonic Solution solution
Answer:
OsmosisA solution with the same concentration of water and solutes as inside a cell, resulting in
the cell A solution in which the concentration of solutes is greater than that of the cell that
resides in the A solution in which the concentration of solutes is less than that of the cell that
resides in the
Question 7:
Measurement in osmoles, human body fluids range 280-300 mOsm 5% Solution
dextroseHypotonic0.75% solution of NaCl Hypotonic10% Solution of NaCl Hypertonic8%
solution of Dextrose Hypertonic0.9% Solution NaCl Isotonic100 m0sm solution of ammonia
Hypotonic
Answer:
Osmolarity Measurement
Question 8:
Molecule like a hormone or neurotransmitter binding to a receptor
Answer:
Primary Messenger
Question 9:
Signaling molecule released into the bloodstream to regulate specific functions
Answer:
Hormone
Question 10:
Diffusion of water through a selectively permeable membrane Isotonic Solution
retaining its normal shape because there is no net movement of water.
Hypertonic Solution solution
Hypotonic Solution solution
Answer:
Osmosis
A solution with the same concentration of water and solutes as inside a cell, resulting in the cell
A solution in which the concentration of solutes is greater than that of the cell that resides in
the A solution in which the concentration of solutes is less than that of the cell that resides in
the
