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rgs science


cell cycle the life cycle of a 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
active transport the movement of substances across the cell membrane that requires the cell to use energy
passive transport the movement of substances across a cell membrane without the use of energy by the cell
osmosis the diffusion of water through a semipermeable membrane
diffusion the movement of particles from regions of higher density to regions of low density
chromosomes in eukaryotic cells one of the structures in the nucleus that are made up of DNA and protein: in 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 division that forms two new nuclei each of which has the same number of chromosomes
cytokinesis the division of the cytoplasm of a cell
interphase before mitosis begins chromosomes are copied
prophase mitosis begins. chromosomes condense from long strands into rodlike structures
metaphase the nuclear membrane is dissolved. paired chromatids align at the cells equator
anaphase chromatids separate and move to opposite sides of the cell
telophase a nuclear membrane forms around each set of chromosomes and the chromosomes unwind. mitosis is complete
vesicle sacs formed from pieces of cell membrane
Created by: rachelray98