Membrane Transport: Interactive Learning Quizzes for Physiology Students

Question 1

Which of the following disorders is caused by a defect in membrane transport?

Accepted Answer

Cystic fibrosis

Answer

Sickle cell anemia

Answer

Diabetes mellitus

Answer

Alzheimer's disease

Question 2

Which transport mechanism requires the use of cellular energy to move molecules against their concentration gradient?

Accepted Answer

Active transport

Answer

Diffusion

Answer

Facilitated diffusion

Answer

Osmosis

Question 3

Ion channels are responsible for:

Accepted Answer

Facilitating the passive movement of ions across the cell membrane

Answer

Pumping ions against their concentration gradient

Answer

Regulating the opening and closing of ATP channels

Answer

Binding to specific receptors on the cell membrane

Question 4

Cell lysis can occur as a result of:

Accepted Answer

Excessive cell swelling

Answer

Excessive cell shrinkage

Answer

Active transport of water out of the cell

Answer

Facilitated diffusion of ions into the cell

Question 5

Active transport is necessary for:

Accepted Answer

Movement of molecules against their concentration gradient

Answer

Movement of molecules down their concentration gradient

Answer

Diffusion of gases across cell membranes

Answer

Facilitated diffusion of ions across cell membranes

Question 6

Ion channel-mediated transport is involved in:

Accepted Answer

Calcium ion entry into muscle cells during contraction

Answer

Sodium-potassium pump

Answer

Facilitated diffusion of glucose

Answer

Osmosis

Question 7

Which of the following is NOT a characteristic of passive transport?

Accepted Answer

Involves carrier proteins

Answer

Does not require energy

Answer

Moves substances down their concentration gradient

Answer

Can occur through ion channels

Question 8

Which of the following ion channels is responsible for the rapid influx of sodium ions during an action potential?

Accepted Answer

Voltage-gated sodium channel

Answer

Sodium-potassium pump

Answer

Leak potassium channel

Answer

Chloride channel

Question 9

The net movement of water across a semipermeable membrane is known as:

Accepted Answer

Osmosis

Answer

Diffusion

Answer

Active transport

Answer

Facilitated diffusion

Question 10

Which of the following diseases is caused by a defect in chloride transport?

Accepted Answer

Cystic fibrosis

Answer

Sickle cell anemia

Answer

Hemophilia

Answer

Down syndrome

Question 11

Which mechanism allows substances to move across a cell membrane from an area of high concentration to an area of low concentration, not requiring energy input?

Accepted Answer

Passive transport

Answer

Active transport

Answer

Ion channel-mediated transport

Answer

Pump-mediated transport

Question 12

Which type of membrane transport protein facilitates the movement of specific ions across a cell membrane, down their electrochemical gradient?

Accepted Answer

Ion channel

Answer

Carrier protein

Answer

P-type ATPase

Answer

Voltage-gated ion channel

Question 13

Which of the following is primarily responsible for establishing and maintaining resting membrane potential in cells?

Accepted Answer

Sodium-potassium pump

Answer

Calcium-sodium exchanger

Answer

Chloride-bicarbonate exchanger

Answer

Hydrogen-potassium ATPase

Question 14

In active transport, substances are transported across a cell membrane against their concentration gradient. Which of the following is the primary energy source for active transport?

Accepted Answer

ATP

Answer

GTP

Answer

Creatine phosphate

Answer

Glucose

Question 15

Voltage-gated ion channels are specialized ion channels that:

Accepted Answer

Open or close in response to changes in membrane potential

Answer

Are always open

Answer

Are only found in neurons

Answer

Transport both cations and anions

Question 16

Which of the following is NOT a function of membrane transport?

Accepted Answer

Cellular respiration

Answer

Nutrient acquisition

Answer

Waste removal

Answer

Cell signaling

Question 17

An experiment reveals that the uptake of a substance into cells is blocked by a non-metabolizable analogue of the substance. This suggests that the substance is likely transported into cells via:

Accepted Answer

Facilitated diffusion

Answer

Simple diffusion

Answer

Passive transport

Answer

Active transport

Question 18

Identify the option that is NOT a type of passive transport.

Accepted Answer

Endocytosis

Answer

Facilitated diffusion

Answer

Diffusion

Answer

Osmosis

Question 19

Which mechanism is primarily responsible for glucose entry into cells?

Accepted Answer

Facilitated diffusion

Answer

Active transport

Answer

Simple diffusion

Question 20

Which type of ion channel is crucial for the propagation of action potentials in neurons?

Accepted Answer

Voltage-gated ion channel

Answer

Mechanically-gated ion channel

Answer

Stretch-activated ion channel

Answer

Ligand-gated ion channel

Question 21

Identify the primary function of the sodium-potassium pump.

Accepted Answer

Maintain the resting membrane potential

Answer

Transport glucose into cells

Answer

Generate an action potential

Answer

Release calcium ions from the sarcoplasmic reticulum

Question 22

Which of the following outcomes is associated with hypertonic extracellular fluid?

Accepted Answer

Cell shrinkage

Answer

Cell bursting

Answer

Cell swelling

Answer

No change in cell volume

Question 23

Which mechanism do cells utilize to transport large molecules?

Accepted Answer

Endocytosis

Answer

Facilitated diffusion

Answer

Ion channels

Answer

Osmosis

Question 24

Which characteristic is essential to the process of active transport?

Accepted Answer

Requires energy

Answer

Specific for certain molecules

Answer

Passive process

Answer

Always involves the movement of ions

Question 25

Which of the following is a type of exocytosis?

Accepted Answer

Neurotransmitter release

Answer

Endocytosis

Answer

Phagocytosis

Answer

Pinocytosis