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Unit 3 Lesson 4

Cells & Body Systems - Cell Structures

TermDefinition
cells the smallest unit of life that displays all of the characteristics of life
eukaryote a type of cell that contains membrane-bound organelles
membrane-bound organelle an organelle that is enclosed by a membrane
organelle a small structure within a cell that performs a specific function, similar to organs in the body
prokaryote a type of cell that lacks membrane-bound organelles
cytoplasm a gel-like fluid that fills a cell that allows organelles to move freely through the cell
cell wall a stiff layer of cellulose outside of a plant cell membrane that gives structure and support to the cell
cell membrane a lipid bilayer outside of the cytoplasm of the cell that controls what enters and leaves the cell
nucleus serves as the control center of the cell and contains the cell's genetic material (DNA)
mitochondria serves as the energy-producing structure of the cell and location of cellular respiration
chloroplast serves as the site of sugar production in plant cells; captures light for photosynthesis
ribosome floats in the cytoplasm or attaches to ER and is site of protein synthesis
lysosome serves as the sites of cellular digestion and contains digestive enzymes that break down worn-out cell parts
endoplasmic reticulum makes, folds, changes, and moves proteins around the cell
golgi apparatus packages proteins and other materials into vesicles to be inserted into a membrane, packaged into an organelle, or shipped to the outside of the cell
vacuole serves as a storage area; plants have a central vacuole that stores water
Created by: PRao
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