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a process by which material is exported from a biological cell

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the process by which a cell, such as a white blood cell, ingests microorganisms, other cells, and foreign particles

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the transport of solid matter or liquid into a cell by means of a coated vacuole or vesicle

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the movement of ions or molecules across a cellular membrane from a lower to a higher concentration, requiring the consumption of energy

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in cell biology, a process by which substances are transported across cell membranes by means of protein carrier molecules

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(esp of muscles) being in a state of abnormally high tension

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(of a drink) designed to replace the fluid and salts lost from the body during strenuous exercise

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a subtle or gradual absorption or mingling

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the gradual difference in concentration of a dissolved substance in a solution between a region of high density and one of lower density

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act of diffusing; state of being diffused

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Passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes

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any of various specific protein molecules in surfacemembranes of cells and organelles to which complementarymolecules, as hormones, neurotransmitters, antigens, or antibodies,may become bound.

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A semipermeable membrane, also termed a selectively permeable membrane, a partially permeable membrane or a differentially permeable membrane

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a conceptual model of cell membrane and its boundary as a tightly packed double layer of phospholipid molecules interspersed with protein molecules which aid cross-membrane transport

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any of a group of fatty compounds, as lecithin, composed of phosphoric esters, and occurring in living cells.

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the semipermeable membrane enclosing the cytoplasm of a cell.

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a plastid containing chlorophyll and other pigments, occurring in plants and algae that carry out photosynthesis

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the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell

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either of two rodlike bodies in most animal cells that form the poles of the spindle during mitosis

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a circumscribed elevation of the epidermis containing serous fluid

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a cell organelle containing enzymes that digest particles and that disintegrate the cell after its death

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a membrane-bound cavity within a cell, often containing a watery liquid or secretion

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an organelle in the cytoplasm of cells that functions in energy production

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a membranous complex of vesicles, vacuoles, and flattened sacs in the cytoplasm of most cells: involved in intracellular secretion and transport

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any of numerous minute particles in the cytoplasm of cells, either free or attached to the endoplasmic reticulum, that contain RNA and protein and are the site of protein synthesis

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a network of tubular membranes within the cytoplasm of the cell

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a central part about which other parts are grouped or gathered

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3.5 Active Transport, Endocytosis, and Exocytosis

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3.5 Active Transport, Endocytosis, and Exocytosis

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a network of fibrous proteins that governs the shape and movement of a biological cell

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a cell with a true nucleus; a cell with a nuclear membrane and organelles

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a cell lacking a true membrane-bound nucleus

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a specialized part of a cell having some specific function; a cell organ

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the cell substance between the cell membrane and the nucleus, containing the cytosol, organelles, cytoskeleton, and various particles

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a basic tenet of modern biology, first stated by Matthias Schleiden and Theodor Schwann in 1838-39, that cells are the basic units of structure and function in living organisms