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Cell Structures/Functions

Cell Structures/Functions. Cell membrane. Contols what enters and leaves the cell. Semi-permeable or selectively permeable - lets some molecules in and keeps some molecules out. lipid layer lipid layer. protein. Cell Wall. Protects and maintains the shape of plant cells.

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Cell Structures/Functions

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  1. Cell Structures/Functions

  2. Cell membrane • Contols what enters and leaves the cell. • Semi-permeable or selectively permeable - lets some molecules in and keeps some molecules out lipid layer lipid layer protein

  3. Cell Wall • Protects and maintains the shape of plant cells

  4. Tim & Moby Cell Structures • http://glencoe.mcgraw-hill.com/sites/dl/free/0078695104/164155/00035804.html

  5. Nucleus • Controls cell activities, contains heredity material like DNA • Contains DNA – blueprint for new cells • Nuclear membrane- surrounds the nucleus, keeps heredity material in. • Nuclear pores- openings in nuclear membrane that allow materials to move into and out of nucleus

  6. Nucleolus • Site of ribosome production • Found in nucleus

  7. Cytoplasm • Jelly-like material, the substance inside a cell where organelles are found, cellular reactions occur here found between cell membrane and nucleus

  8. Cytoskeleton Microtubule Microfilament • Functions in support, locomotion, structure, and movement within the cell • Made of microtubules & microfilaments

  9. Microtubules • Hollow tubes that strengthen and maintain the shape of a cell; used in movement

  10. Microfilaments • Tiny filaments that strengthen and maintain the shape of a cell; also used in movement.

  11. Ribosomes • Site of protein synthesis (where proteins are put together & made)

  12. Endoplasmic reticulum-canals • System of membranous canals used to transport substances within the cell • Rough ER • Smooth ER

  13. Golgi apparatus • Stack of membranes • Packages substances in the cell, especially secretions, sends to final destination

  14. Vacuole • Plants- protects and maintains shape of plant. • Store materials water, waste,salts, proteins, and carbs

  15. Lysosomes (animals only) • Contains digestive enzymes that are used to remove waste and damaged substances from the cell. • Aka: “suicide sac”

  16. Mitochondria • Site of cellular respiration • Converts food into usable ENERGY • Aka “Powerhouse” • Mighty, Mitochondria

  17. Chloroplast • Site of photosynthesis • Plants only • Contains chlorophyll. A pigment

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