GMS-6440 Medical Physiology Exam 1
2025/2026 Exam Questions with 100%
Correct Answers | Latest Update
What chemical component of the plasma membrane prevents ions from
readily and freely moving across the membrane? - 🧠 ANSWER ✔✔Lipids
(phospholipids)
Where is the concentration of [K+] greater? - 🧠 ANSWER ✔✔In the
cytoplasm
Across a cell's plasma membrane, movemen of water is a ___________
event. - 🧠 ANSWER ✔✔Passive through a channel.
Where is the concentration of [Na+] greater? - 🧠 ANSWER ✔✔In the
extracellular fluid.
,For a neutrally charged molecule, "Active" transport means the molecules
move across a membrane from? - 🧠 ANSWER ✔✔A low concentration to a
higher concentration.
What molecule is the source of energy for primary active transport to
occur? - 🧠 ANSWER ✔✔ATP (adenosine triphosphate)
True of False: There is only one type of channel in cell membranes. - 🧠
ANSWER ✔✔False.
True or False: Regarding primary active transport, solutes move from a
compartment of low concentration to a compartment of high concentration.
- 🧠 ANSWER ✔✔True. Always low to high.
True or False: Regarding secondary active transport of glucose, the
movement of glucose is from a compartment of high concentration to a
compartment of low concentration. - 🧠 ANSWER ✔✔False.
True or False: All transport through membrane channels is classified
"Active" transport. - 🧠 ANSWER ✔✔False.
True or False: Electrolytes are pumped and leaked across cell membranes
simultaneously but independently. - 🧠 ANSWER ✔✔True.
,At what point in time does the electrochemical equilibrium potential exist? -
🧠 ANSWER ✔✔At equilibrium.
What major factor that regulates an electrolyte's electrochemical
equilibrium potential across a cell membrane? - 🧠 ANSWER
✔✔Concentration (chemical) gradient.
True or False: The electrochemical equilibrium potential for a single highly
permant ion species is controlled by the concentration gradient. - 🧠
ANSWER ✔✔True.
True or False: Movement of a charge electrolyte is determined by the major
forces of voltage plus chemical concentration gradients. - 🧠 ANSWER
✔✔True.
True or False: The cellular K+ Electrochemical Equilibrium Potential is
regulated by concentration differences across the plasma membranes. - 🧠
ANSWER ✔✔True.
Which of these ion choices is primarily responsible for establishing a typical
cell membrane's resting potential?
A. Mg++
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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, B. Na+
C. K+ - 🧠 ANSWER ✔✔K+
True or False: Excessive extracellular acid (i.e. [H+]) will raise the
concentration of extracellular potassium ion concentration. - 🧠 ANSWER
✔✔True.
True or False: Cell Membrane Potential is controlled by the relative degree
of ion permeability as well as ion concentration gradients existing across a
cell's plasma membrane. - 🧠 ANSWER ✔✔True.
True or False: Rhabdomyolysis can lead to cardiac muscle cell pathology
as the result of creating a condition of hyperkalemia (excessive K+
concentration in the plasma). - 🧠 ANSWER ✔✔True.
True or False: A normal lean person consists of 90% water. - 🧠 ANSWER
✔✔False, 60% water.
True or False: Most of the sodium in the body is inside the cells. - 🧠
ANSWER ✔✔False, it is extracellular. K+ is intracellular.
True or False: The capillary is the main barrier between the intracellular
and extracellular fluids. - 🧠 ANSWER ✔✔False. The cell wall, also called
2025/2026 Exam Questions with 100%
Correct Answers | Latest Update
What chemical component of the plasma membrane prevents ions from
readily and freely moving across the membrane? - 🧠 ANSWER ✔✔Lipids
(phospholipids)
Where is the concentration of [K+] greater? - 🧠 ANSWER ✔✔In the
cytoplasm
Across a cell's plasma membrane, movemen of water is a ___________
event. - 🧠 ANSWER ✔✔Passive through a channel.
Where is the concentration of [Na+] greater? - 🧠 ANSWER ✔✔In the
extracellular fluid.
,For a neutrally charged molecule, "Active" transport means the molecules
move across a membrane from? - 🧠 ANSWER ✔✔A low concentration to a
higher concentration.
What molecule is the source of energy for primary active transport to
occur? - 🧠 ANSWER ✔✔ATP (adenosine triphosphate)
True of False: There is only one type of channel in cell membranes. - 🧠
ANSWER ✔✔False.
True or False: Regarding primary active transport, solutes move from a
compartment of low concentration to a compartment of high concentration.
- 🧠 ANSWER ✔✔True. Always low to high.
True or False: Regarding secondary active transport of glucose, the
movement of glucose is from a compartment of high concentration to a
compartment of low concentration. - 🧠 ANSWER ✔✔False.
True or False: All transport through membrane channels is classified
"Active" transport. - 🧠 ANSWER ✔✔False.
True or False: Electrolytes are pumped and leaked across cell membranes
simultaneously but independently. - 🧠 ANSWER ✔✔True.
,At what point in time does the electrochemical equilibrium potential exist? -
🧠 ANSWER ✔✔At equilibrium.
What major factor that regulates an electrolyte's electrochemical
equilibrium potential across a cell membrane? - 🧠 ANSWER
✔✔Concentration (chemical) gradient.
True or False: The electrochemical equilibrium potential for a single highly
permant ion species is controlled by the concentration gradient. - 🧠
ANSWER ✔✔True.
True or False: Movement of a charge electrolyte is determined by the major
forces of voltage plus chemical concentration gradients. - 🧠 ANSWER
✔✔True.
True or False: The cellular K+ Electrochemical Equilibrium Potential is
regulated by concentration differences across the plasma membranes. - 🧠
ANSWER ✔✔True.
Which of these ion choices is primarily responsible for establishing a typical
cell membrane's resting potential?
A. Mg++
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, B. Na+
C. K+ - 🧠 ANSWER ✔✔K+
True or False: Excessive extracellular acid (i.e. [H+]) will raise the
concentration of extracellular potassium ion concentration. - 🧠 ANSWER
✔✔True.
True or False: Cell Membrane Potential is controlled by the relative degree
of ion permeability as well as ion concentration gradients existing across a
cell's plasma membrane. - 🧠 ANSWER ✔✔True.
True or False: Rhabdomyolysis can lead to cardiac muscle cell pathology
as the result of creating a condition of hyperkalemia (excessive K+
concentration in the plasma). - 🧠 ANSWER ✔✔True.
True or False: A normal lean person consists of 90% water. - 🧠 ANSWER
✔✔False, 60% water.
True or False: Most of the sodium in the body is inside the cells. - 🧠
ANSWER ✔✔False, it is extracellular. K+ is intracellular.
True or False: The capillary is the main barrier between the intracellular
and extracellular fluids. - 🧠 ANSWER ✔✔False. The cell wall, also called
