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The Cell in Action

Maria Diaz

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 substance 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 in a vesicle to bring the particles into the cell.
ecoytosis 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 memebrane.
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 int 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 new nuclei, each of which has the same number of chromosomes.
cytokinsis the division of the cytoplasm of a cell.
Created by: 15diazmar
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