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Cell organelle flashcards
organelles for prokaryotic and eukaryotic cells
25
Biology
10th Grade
09/22/2010

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Term
flagellum
Definition
*Projection from bacteria that moves the cell
*Made of microtubules
*Prokaryotes only
Term
plasmid
Definition
*Small ring of DNA outside of the chromosome
*Prokaryotes only
*Capable of replication on its own
Term
circular chromosome
Definition
*Single strand of DNA that forms a loop
*Prokaryotes only
Term
capsule
Definition
*Layer on outside of cell wall
*Most bacteria have capsule
*Prokaryotes only
Term
ribosome
Definition
*Site of protein synthesis
*Smaller ribosome in bacteria that is not membrane bound
*Larger ribosome in eukaryotes that is membrane bound
*Prokaryotes, plant and animal
Term
undulipodium
Definition
*Projection from eukaryote that moves the cell
*made of microtubules
*animal cells only
Term
chloroplast
Definition
*Energy changing organelle that perfoms photosynthesis
*has own DNA and ribosomes (Endosymbiotic Theory)
*plants, (also algae and some protists)
Term
cilia
Definition
*Short hair-like projections made of microtubules
*move the cell or move fluid over the cell
*Prokaryotes, animals and plants (rare)
Term
chromosomes
Definition
*Made of DNA and protein
*found in nucleus
*animal and plants cells
Term
cell wall
Definition
*rigid structure surrounding cell
*made of cellulose
*Prokaryotes and plants
Term
nucleolus
Definition
*inside nucleus
*assemble ribosomes
Term
vacuoles
Definition
*membrane bound sac
*turgor pressure in plants
*animal and plant
Term
lysosome
Definition
*sac of digestive enzymes (suicide sac)
*made by rough ER
*plant and animal
Term
microfilaments
Definition
*small fibers
*cell support, muscle contraction, helps in cell division
*Prokaryote, animal and plant
Term
centrioles
Definition
*ring of 9 groups of microtubules
*form a perpendicular pair
*help in moving chromosomes during cell
*animal cells
Term
mitochondria
Definition
*produce energy that the cell can use taken in from food
*have own DNA and ribosomes (Endosymbiotic Theory)
*animal and plant cells
Term
microtubules
Definition
*hollow tubes
*make up centrioles, cilia, undulopodium, flagellum
*transportation of information from nucleus to other parts of cell
*prokaryote (no nucleus), animal and plant cells
Term
rough endoplasmic reticulum (rough ER)
Definition
*double sided membrane with ribosomes attached
*make proteins
*animal and plant cells
Term
smooth endoplasmic reticulum (smooth ER)
Definition
*double sided membrane (no ribosomes) *make transport vesicles *add carbs and lipids to proteins *detoxify *steroid production *animal and plant cells
Term
Golgi apparatus
Definition
*set of flattened membrane-bound sacs
*packaging and distribution
*animal and plant cells
Term
nucleus
Definition
*cell instruction headquarters, holds DNA
*animal and plant cells
Term
nuclear membrane (nuclear envelope)
Definition
*double membrane surrounding nucleus
*contains nuclear pores so substances can pass through (like RNA)
*animal and plant cells
Term
cell membrane
Definition
*outer membrane that encloses cell and helps maintain shape
*regulates transportation in and out of cell
*prokaryotes, plant and animal cells
Term
cytoplasm (cytosol)
Definition
*clear jelly-like material that fills cells
*contains water, salts, organic molecules, organelles
*prokaryotes, animal and plant cells
Term
nucleoplasm
Definition
*clear jelly-like material that fills nucleus of cell
*animal and plant cells
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