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31 Cards in this Set

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nucleus
membraneous organelle that houses chromosomes' DNA
storage
eukaryote
an organism whose cells have a membrane-enclosed nucleus and organelles; a protist, fungus, plant or animal
nucleus
osmosis
the movement of water across a selectively permeable membrane
water
cell theory
the theory that organisms are composed of cells and their products and that these cells are all derived from pre-existing cells
cycle
cilia
short hairlike cell appendages specialized for locomotion and formed from a core of nine outer doublet microtubules and two inner microtubules
hairy
active transport
movement of a substance across a biological membrane against its concentration gradient w/ the help of energy input and specific transport proteins
movement
nuclear envelope
the membrane in eukaryotes that encloses the genetic material, separating it from the cytoplasm
DNA parcel
cytoskeleton
network of microtubules, microfilaments, and intermediate filaments that run throughout the cytoplasm and serve a variety of mechanical and transport functions
network
plasma membrane
membrane at the boundary of every cell that seves as a selective barrier to the passage of ions and molecules
boundary
prokaryote
the kingdom of bacteria whose cells do not have membrane-enclosed organelles, such as nuclei, mitochondria & chloroplasts
organelles-covering
diffusion
movement of a substance down its construction gradient from a more concentration area to a less concentrated area
movement
cell
organism made of tiny highly active units
units
nucleolus
spherical body in the nucleus of most plant and animal cells, comprising of of protein and nucleotides and concerned w/ the production of proteins
proteins
cell wall
nonliving covering around the plasma membrane of certain cells, as in plants, many algae, some prokaryotes, in plants the cell wall is constructed of cellulose and other materials
covers
passive transport
diffusion of a substance across a biological membrane through a transport protein in the membrane
diffusion of...
flagella
the long cellular appendages specialized for locomotion and formed from a core of nine outer doublet microtubules and two single inner microtubules; many protists and certain animal cells have flagella
wiggly movers
chloroplast
an organelle found only in plants and photosynthetic protists; contains chlorophyll that absorbs light energy used to drive photosynthesis
chlorophyll
golgi body
an organelle in eukaryotic cells consisting of stacked membranes that modify and package materials for export out of the cell
post office
organelle
organized structure within a cell with a specific function: chlorplast, mitochondrion
function
vacuole
membrane enclosed structure in the cytoplasm of a unicellular organism
cytoplasm
turgor pressure
pressure exerted by plant cells against their cell walls whenever the plant is adequately supplied w/ water
swelling of plant cells
cytoplasm
the entire contents of the cell except for the the nucleus, bounded by the plasma membrane
lots and lots of squishy
centrioles
one of two structures in animal cells, composed of cylinders of nine triplet microtuble assembly during cell division
assembly
cytosol
the geletin-like potion of the cytoplasm that bathes the organelles of the cell
jello
chromosome
long, threadlike group of genes found in the nucleus of all eukaryotic cells and most visible during mitosis and meiosis, chomosomes consist of DNA and proteins
threads of DNA
endoplasmic reticulum
an extensive membraneous network in eukaryotic cells composed of ribosome studded or ribosome free regions
network
lysosome
cell vesicle that contains digestive enzymes
enzymes
selectively permeable
dicerning penetration through cell
gate
equilibrium
a condition in which all acting influences are cancelled by others resulting in a stable, balanced, or unchanging system
balance
mitochondria
the cell organelles in eukaryotic cells that carry on cellular respiration, releasing energy from food molecules and storing it in ATP
storage
genes
fundamental physical units of heredity which transmits a set of specifications from one generation to the next; a segment of DNA that codes for a specific product
information coded in DNA cell units