PHYSIOLOGY QUIZ

A colorful illustration representing the human body's physiology, highlighting cellular processes, membrane transport, and neurotransmitter action, with diagrams and graphical representations.

Physiology Mastery Quiz

Test your knowledge of physiological concepts with our engaging quiz! This quiz covers key topics in cell physiology, membrane transport, and neurotransmitter functions.

Challenge your understanding and see how well you comprehend:

Membrane potentials
Transport mechanisms
Neurotransmitter roles
Osmolarity effects

20 Questions5 MinutesCreated by LearningCell234

The chemical driving force across a membrane is a reflection of the:

membrane potential

concentration gradient

equilibrium potential

Osmotic pressure

As osmolarity increases, water concentration ________________ and osmotic pressure _________________.

Decreases: increases

decreases: decreases

increases: decreases

Increases:increases

In the living cell, the resting membrane potential is ____________ with more ___________ charges outside the cell.

Positive: positive

negative: positive

Negative: negative

Positive: negative

Sodium-linked glucose transport is an example of:

Facilitated diffusion

Secondary active transport

Primary active transport

Sodium-potassium pump

Secondary active transport occurs when:

An energy source directly transports a molecule across a membrane

A concentration or electrochemical gradient is created by primary active transport

A membrane potential moves ions up their concentration gradient

A molecule passes through a second membrane after a first membrane

Select the membrane transport protein that is least likely to exhibit saturation

carrier

Channel with binding sites

channel with an open pore

Pump

An example of primary active transport is the:

Calcium pump

glucose carrier

Sodium-linked glucose transport

Sodium-proton counter transport

Red blood cells are placed into an unknow solution. The cells swell and some burst. This indicates that the solution is

isotonic

Hypotonic

Hypertonic

Cannot be determined

Aquaporins are ________________ that permit the ___________ transport of water.

channels: active

carriers: passive

Channels: passive

Carriers: active

Select the molecule that should have the greatest permeability through a cell membrane:

ATP

Amino acid

Cholesterol

glucose

_____________ molecules readily dissolve in water and are ______________.

Nonpolar: hydrophilic

Polar: hydrophilic

Polar: hydrophobic

Nonpolar: hydrophobic

Which of the following is the approximate extracellular fluid volume of a normal Individual? (male)

How does the intracellular Na+ concentration change following inhibition of Na+ -K+ ATPase?

Increase

Decrease

Remains the same

Solution A contains 10 mmol/L glucose, and Solution B contains 1 mmol/L glucose. If the glucose concentration in both solutions is doubled, by how much will the flux (flow) of glucose between the two solutions change

Remain unchanged

Double

Triple

Quadruple

Which of the following is characteristic of the events occurring at an excitatory synapse

There is a massive efflux of calcium from the presynaptic terminal

Synaptic vesicles bind to the postsynaptic membrane

Voltage-gated potassium channels are closed

) Ligand-gated channels are opened to allow sodium entry into the postsynaptic neuron

The excitatory or inhibitory action of a neurotransmitter is determined by which of the following?

The function of its postsynaptic receptor

Its molecular composition

The shape of the synaptic vesicle in which it is contained

The distance between the pre- and postsynaptic membranes

Prolonged changes in neuronal activity are usually achieved through the activation of which of the following?

Voltage-gated chloride channels

Transmitter-gated sodium channels

G-protein–coupled channels

Voltage-gated potassium channels

Sodium and potassium pumps are examples of __________

Passive transport

Plasmolysis

Active transport

Osmosis

PHYSIOLOGY QUIZ

Physiology Mastery Quiz

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