BackCell Structure and Function - Anatomy & Physiology
04:26
Terms in this set (20)
The double layer of lipids with embedded proteins that serves as an external cell barrier and controls transport of substances in and out of the cell.
Cellular region between the nuclear and plasma membranes, consisting of fluid cytosol, organelles, and inclusions.
Rodlike organelles with a double membrane folded into cristae; site of ATP synthesis, the powerhouse of the cell.
Dense particles made of two subunits; sites of protein synthesis.
Membranous system enclosing a cavity, studded with ribosomes; synthesizes proteins bound in vesicles for transport.
Membranous system of sacs and tubules free of ribosomes; site of lipid and steroid synthesis, lipid metabolism, and drug detoxification.
A stack of flattened membranes that packages, modifies, and segregates proteins for secretion or incorporation into the plasma membrane.
Membranous sacs containing catalase and oxidase enzymes; detoxify harmful substances like hydrogen peroxide.
Membranous sacs containing acid hydrolases; sites of intracellular digestion.
Network of protein filaments and tubules that provide cell shape, support, and movement.
Movement of molecules from an area of higher concentration to an area of lower concentration without energy input.
Diffusion of water molecules through a selectively permeable membrane from a region of low solute concentration to high solute concentration.
Passive transport of molecules across the plasma membrane via specific carrier proteins.
Movement of substances against their concentration gradient using energy (ATP) and carrier proteins.
Process by which cells engulf substances by enclosing them in a vesicle formed from the plasma membrane.
Process where vesicles fuse with the plasma membrane to release contents outside the cell.
Biconcave disc shape that increases surface area for gas exchange and flexibility to move through capillaries.
Elongated cells specialized for contraction and movement.
Cells with long extensions that transmit electrical impulses for communication.
Structures that connect cells to each other, including tight junctions, desmosomes, and gap junctions.