Introduction to Membrane Transport Definitions Flashcards

The process by which biological membranes selectively allow certain molecules to pass while blocking others, based on their properties.

Structures that are selectively permeable, allowing certain molecules to pass while blocking others, thus regulating the internal environment of cells.

Allows certain molecules to pass while blocking others, based on size, charge, or solubility, ensuring selective transport across biological membranes.

Allows certain molecules to pass while blocking others, based on size, charge, or solubility, ensuring selective entry and exit across the membrane.

The passive movement of molecules from an area of higher concentration to an area of lower concentration across a semi-permeable membrane.

Able to be penetrated by certain molecules, allowing selective passage through a barrier.

A positively charged ion that cannot freely cross selectively permeable biological membranes due to its charge and size, requiring specific transport mechanisms to move across.

A diatomic molecule essential for respiration, freely permeable through biological membranes due to its small size and nonpolar nature.