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The Cell in Action

Marko Grdic

TermDefinition
diffusion the movement of particles from regions of higher density to regions of lower density
osmosis the diffusion of water through a semipermeablenmembrane
passive transport the movement of substances across a cell membrane without the the use of energy by the cell
active transport the movement of substances across the cell membrane that requires the cell to use all energy.
endocytosis the process by which a cell membrane surrounds a particle in a vesicle to bring the particle into a cell
exocytosis the process in which a cell releases a particle by enclosing that 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
fermination the breakdown of food without the use of oxygen
cell cycle the life cycle 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 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 cells divisions that forms two new nuclei, each of which has the same number of chromosomes
cytokinesis the division of the cyotplasm of a cell
Created by: markogrdic