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The Cell in Action

Nicholas Pullano

TermDefinition
diffusion the movement of particles from regions of higher density to re.gions with 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 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 resperation the process by which cell 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 the eukaryotic cell, a membrane-bound organelle that contains the cell's DNA and that has a role in processes such as growth, metabolism, and reproduction.
cytokinesis the division of the cytoplasm of a cell.
Created by: pullanon
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