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the cell in action

Jake Ponzetti

TermDefinition
diffusion the movement of particles from regions of higher density to regions of lower density
osmosis the diffusion of water through a semipermeable membrane
passive transport the movement of substances across a cell membrane with out the use of energy by the cell
active transport the movement of substances across the cell membrane that requires the cell to use energy
endocytosis the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell
exocytosis the process in which a cell releases a particle by enclosing the particle in a vesicle that then moves to the cell surface and fuses with the cell membrane
photosynthesis the process by which plants, algae and some bacteria use sunlight, carbon dioxide, and water to make food
cellular respiration the process by which cells use oxygen to produce energy from food
fermentation the breakdown of food without the use of oxygen
cell cycle the life cycle of a cell
chromosomes in a eukaryotic cell, one of the structures in the nucleus that are made up of dna and protein; in a prokaryotic cell, the main ring of dna
homologous chromosomes chromosomes that have the same sequence of genes and the same structure
mitosis in eukaryotic cells, a process of cell division that forms two nuclei, each of which has the same number of chromosomes
cytykinesis the division of the cytoplasm of a cell
Created by: 15ponzettijak