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Specialized Cell Structures. Biology Unit 04 Lesson 01. Cell Wall. Description: Rigid o uter layer Outside of cell membrane Function: Support Protection Helps cell maintain its shape Analogy. Cell Membrane. Description: Outside covering of cell made of lipid bilayer Function:
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Specialized Cell Structures Biology Unit 04 Lesson 01
Cell Wall • Description: • Rigid outer layer • Outside of cell membrane • Function: • Support • Protection • Helps cell maintain its shape • Analogy
Cell Membrane • Description: • Outside covering of cell made of lipid bilayer • Function: • Barrier between cell and its environment • Controls what substances can enter or leave the cell • Provides support and protection, especially in cells without a cell wall • Analogy
Ribosomes • Description: • Made of protein and RNA • Very small, spherical shaped • Function: • Make proteins • Analogy
Cytoplasm • Description: • Jelly-like substance that fills the cell and surrounds the organelles • Function: • Fills space between organelles • Contains materials needed by the organelles • Analogy
Flagella • Description: • Long, thread-like extension of a cell • Function: • Helps cell move • Analogy
Cilia • Description: • Short, hair-like projection on the cell surface • Function: • Used to sweep away things from the cell surface or help the cell move through fluid • Analogy
Nucleus • Description: • Core, central portion of cell • Function: • Contains genetic information (DNA) • Directs cell activities • Analogy
Nuclear Membrane • Description: • Double-layer membrane surrounding the nucleus • Function: • Separates nucleoplasm from cytoplasm • Analogy
Nucleolus • Description: • Round structure within nucleus • Made of protein and RNA • Function: • Makes ribosomes • Analogy
Chloroplast • Description: • Oval or bean shaped structure with green color • Function: • Helps capture sunlight to produce food (energy) for plants • Analogy
Golgi Apparatus • Description: • Flattened sacs called cisternae • Function: • Modifies and packages materials created in the cell for transport (inside or outside of the cell) • Analogy
Lysosome • Description: • Small sacs • Function: • Use digestive enzymes to breakdown old/worn-out organelles, viruses or bacteria, and/or food particles • Analogy
Mitochondrion • Description: • Spherical or rod-shaped • Inner and outer membranes • Function: • Converts sugars into ATP (energy) for the cell • Analogy
Plastid • Description: • Double-membrane bound organelle • Function: • Involved in food storage; function depends mostly upon which pigments are present • Analogy
Rough Endoplasmic Reticulum • Description: • System of membranous tubes and sacs with ribosomes on the surface (making it appear rough) • Function: • Helps make and transport new proteins to Golgi apparatus or outside of the cell • Analogy
Smooth Endoplasmic Reticulum • Description: • System of membranous tubes and sacs • Function: • Makes lipids • Creates and stores steroids • Stores ions that cells might need • Metabolizes carbohydrates • Analogy
Vacuole • Description: • Sacs: smaller in animal cells, larger in plant cells • Function: • Store a variety of things such as water, nutrients, or waste products • Analogy
Vesicle • Description: • Small sacs • Function: • Stores, transports, or digests materials within the cell • Analogy