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Cells

biology

TermDefinition
cell theory A scientific theory which describes the properties of cells.
cytoplasm He material or protoplasm within a living cell, excluding the nucleus.
organelle any of a number of organized or specialized structures within a living cell.
prokaryotic cell any of the typically unicellular microorganisms that lack a distinct nucleus and membrane-bound organelles and that are classified as a kingdom
eukaryotic cell An organism whose cells contain a nucleus surrounded by a membrane and whose DNA is bound together by proteins (histones) into chromosomes. The cells of eukaryotes also contain an endoplasmic reticulum.
Cytoskeleton a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence.
Nucleus the central and most important part of an object, movement, or group, forming the basis for its activity and growth.
Endoplasmic reticulum a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.
Ribosome protein builders or the protein synthesizers of the cell.
Golgi apparattus a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.
Vesicle a fluid- or air-filled cavity or sac, in particular.
Mitochondrion an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers
Vacuole a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
Lysosome an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane.
Centiole
Cell wall
Chloroplast
Cell mebrane
Phospholipid
Fluid mosaic model
Selective permeability
Receptor
Passive transport
Diffusion
Concentration gradient
Osmosis
Isotonic
Hypertonic
Hypotonic
Facilitated diffusion
Active transport
Endocytosis
Phagocytosis
exocytosis
Created by: 24mass
 

 



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