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The Cell in Action

Joe Dennis

TermDefinition
diffusion the movement of particles from regions of higher density to regions of the lower density.
osmosis the diffusion of water through a semipermeable membrane.
passive transport the movement of substances across a cell membrane without 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 I 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 respication the process by which cells oxygen to produce energy from food.
fermentation the breakdown of food without the use of oxygen.
cell cycle the life of a cell
chromosome in a eukaryotic cell, one of the structures in the nucleus that are made up of dna and protein in a prokaryotic 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 divison that forms two new nuclei each of which has the same number of chromosomes.
cytokines the division of the cytoplasm of a cell.
Created by: JTDanger2014