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Cell Organelles

Ch. 3 Cell Structure and Function

TermDefinition
Plasma membrane Separates cell from external environment; controls passage of organic molecules, ions, water, oxygen, and wastes into and out of the cell
Cytoplasm Provides structure to cell; site of many metabolic reactions; medium in which organelles are found
Nucleoid Location of DNA
Nucleus Cell organelle that houses DNA and directs synthesis of ribosomes and proteins
Ribosomes Protein synthesis
Mitochondria ATP production/cellular respiration
Peroxisomes Oxidizes and breaks down fatty acids and amino acids, and detoxifies poisons
Vesicles and vacuoles Storage and transport; digestive function in plant cells
Centrosome Unspecified role in cell division in animal cells; organizing center of microtubules in animal cells
Lysosomes Digestion of macromolecules; recycling of worn-out organelles
Cell wall Protection, structural support and maintenance of cell shape
Chloroplasts Photosynthesis
Endoplasmic reticulum Modifies proteins and synthesizes lipids
Golgi apparatus Modifies, sorts, tags, packages, and distributes lipids and proteins
Cytoskeleton shape, secures organelles in specific positions, allows cytoplasm and vesicles to move within the cell, and enables unicellular organisms to move independently
Flagella Cellular locomotion
Cilia Cellular locomotion, movement of particles along extracellular surface of plasma membrane, and filtration
Created by: watsonk
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