Cell Transport Mechanisms Quiz

Active transport requires energy to move molecules against the concentration gradient.

Simple diffusion is a passive transport process where molecules move from high to low concentration without energy input.

Mitochondria are the primary organelles for ATP production in eukaryotic cells.

Endocytosis is an active transport process, not a type of passive transport.

The sodium-potassium pump transports sodium ions in and potassium ions out of the cell.

In a hypertonic solution, a cell loses water and undergoes shrinkage.

Channel proteins regulate the passage of ions and solutes through the cell membrane.

Active transport moves molecules against the concentration gradient, requiring energy.

Carrier proteins regulate the flow of specific molecules in facilitated diffusion.

Phagocytosis engulfs large particles, while pinocytosis engulfs liquids in cell processes.

Symport of glucose and sodium ions is an example of cotransport in cell processes.

Receptor-mediated endocytosis involves the uptake of specific molecules bound to receptors.

Osmosis results in equalizing solute concentrations across the membrane.

Oxygen can freely diffuse through the cell membrane without the need for transport proteins.

The fluid mosaic model suggests a dynamic membrane structure with embedded proteins in a fluid phospholipid bilayer.

Active transport relies on ATP to drive the movement of molecules across the membrane.

Endocytosis always requires energy input for the uptake of materials by the cell.