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Cell Organelles
List and descriptions of animal and plant cell organelles
16
Science
7th Grade
10/17/2012

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Term
Pinocytotic Vesicle
Definition
a membrane-bound vacuole formed by pinocytosis, a specific form of endocytosis
Term
Lysosome
Definition
membrane-bound organelles containing digestive enzymes; their function is to break down food
Term
Golgi Vesicle
Definition
'buds' from the Golgi apparatus; containing proteins and fuse with cell membrane and discharge contents into interior with exocytosis.
Term
Rough ER(endoplasmic reticulum)
Definition
dotted membrane-bound channels with attached ribosomes on the side of the membrane that faces the cytoplasm.
Term
Smooth ER(endoplasmic reticulum)
Definition
membrane-bound channels with no attached ribosomes
Term
cell membrane
Definition
the living phospholipid bilayer with embedded glycoproteins; is permeable to water molecules by osmosis.
Term
mitochondria(plural: mitochondrion)
Definition
organelles which produce ATP, the cell's form of energy; one glucose molecule = 38 ATP molecules
Term
Golgi Apparatus
Definition
a series of flattened sacs involved in modification, storage, and secretion of proteins (lipids meant to leave the cell)
Term
Nucleolus
Definition
dark-staining body within the nucleus where ribosomal RNA is produced
Term
Nucleus
Definition
organelle containing chromatin; COMMAND CENTRAL OF CELL
Term
Microtubules
Definition
protein filaments composed of tubulin; involved in cell movement, shape, and formation of mitotic spindles
Term
Cytoplasm
Definition
the jelly like substance inside the cell occupying everything in the cell membrane; generally excludes nucleus
Term
Ribosome
Definition
protein synthesis contains ribosomal RNA;are NOT membrane bound
Term
Large Central Vacuole (only in plant cell)
Definition
fluid filled sac which holds salts, water soluble pigments, and crystal toxic molecules; is a large part of the cell
Term
Cell Wall (only in plant cell)
Definition
cellulose layer surrounding the plasma membrane; very porous and permeable to molecules and ions. is rigid: maintains same shape
Term
Vacuole Membrane (only in plant cell)
Definition
the lipid bilayer surrounding the vacuole that separates its contents from the cytoplasm of the cell.
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