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chap 8

chap 8 vocab

QuestionAnswer
osmosis diffusion of water across a selectively permeable membrane
isotonic solution the concentration of dissolved substances in the solution is the same as the concentration of dissolved substances inside the cell
hyptonic solution the concentration of dissolved substances is the same as the concentration of dissolved substances in side the cell
hypertonic solution the concentration of dissolved substances is lower in the solution outside the cell than the concentration inside the cell
passive transport cell uses NO energy to move particles (simple diffusion)
facilitated diffusion passive transport of materials across membrane using transport
active transport movement of materials against a concentration gradient USES ENERGY
endocytosis process by which a cell surronds and takes in material from the environment
exocytosis is the expulsion or secretion of materiald from a cell
chromosomes contain dna and become darkly colored when stained
chromatin long strands of dna wrapped around protiens called histones
cell cycle sequence of growth and division of a cell
interphase cell grows in size and carries on metabolism also during this period chromosomes are duplicated in prepartion for division
mitosis period of nuclear division
prophase long stringy chromatin coils up into visible chromatins
sister chromatids two halves of the doubled structure
centomere holds sister chromatids together
centrioles small dark cylindrical structure that are made of microtubules and are located outside the nucleus
spindle football shaped cagelike structure consisting of thin fibers made of microtubules
metaphase second phase of mitosis chromosomes become attached to spindles
anaphase third phase of mitosis centromeres split apart
telophase fourth phase spindle breaks down
cytokinesis the cell cytoplasm divides
tissue groups of cells that work together
organs tissues that work together
organ systems groups of organs that wotk together
cancer maligant growth resulted from uncontrolled cell division
gene segment of dna that controls the prosuction of a protien
Created by: showingshelby
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