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Cell Parts
Cell Parts and Functions
19
Biology
Undergraduate 1
09/25/2008

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Term
Nucleus
Definition
Contains: Chromosomes, nucleolus, and nuclear lamina
Function: genetic info, assembly of ribosomes, structural support
Term
Ribosomes
Definition
Contain: complex of RNA and proteins
Function: protein synthesis
Term
Rough Endoplasmic Reticulum (RER)
Definition
Contains: network of branching sacs, ribosomes attached to it
Function: processin proteins
Term
Golgi Aparatus
Definition
Contains: stacks of flattened cisterane
Functions: further processing and packaging of proteins
Term
Smooth Endoplasmic Reticulum (SER)
Definition
Contains: network of branching sacs, enzymes for synthesizing lipids
Function: Lipid synthesis
Term
Peroxisomes
Definition
Enzymes that catalyze oxidation reactions
Function: processing of fatty acids
Term
Lysosomes
Definition
Contains: acid hydrolases
Function: digestion and recycling
Term
Vacuoles
Definition
Contains: pigments, oils, carbohydrates,water, or toxins
Function: coloration; storage of oils, carbohydrates, water, or toxins
Term
Mitochondria
Definition
Contain: enzymes for oxidation-reduction reactions
Function: ATP production
Term
Chloroplasts
Definition
Contain: pigments, enzymes for oxidation reactions
Function: sugar production from photosynthesis and ATP production
Term
Cytoskeleton
Definition
Contain:actin and intermediate filaments, and microtubules
Function: structural support, movement of materials
Term
Plasma Membrane
Definition
Contains: phospholipid bilayer with transport and receptor proteins
Function: selective permeability, maintains cell environment
Term
Cell Wall
Definition
Contains: carbohydrate fibers through carb protein matrix
Function: protection, structural support
Term
Chromosome
Definition
a structre composed of DNA molecule and associated proteins
Term
Chromatin
Definition
the material that makes up eukaryotic chromosomes. Consists of a DNA molecule complexed with histone proteins.
Term
Chromatid
Definition
one strand of a replicated chromosome
Term
Sister Chromatids
Definition
the two strands of areplicated chromosome, have identical genetic material
Term
Centromere
Definition
the structurethat joins sister chromatids
Term
Kinetochore
Definition
the structure on sister chromatids wehre spindel fibers attach.
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