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Cellular Organelles. …a “division of labour”. Animal Cell. Guess the organelle!. Tiny & oval shaped…

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cellular organelles

Cellular Organelles

…a “division of labour”

guess the organelle
Guess the organelle!
  • Tiny & oval shaped…
  • Provide body with needed energy in a process called “respiration” whereby sugar molecules are combined with oxygen to form carbon dioxide & water…as the products are formed, energy is released.
  • “power plant” of cell
guess the organelle5
Guess the organelle!
  • Cell growth & reproduction require the constant synthesis of proteins…
  • Proteins are the molecules that make up cell structure…
  • Measure just 20 nm in length…
  • Which organelles are responsible for the synthesis of proteins?
guess the organelle7
Guess the organelle!
  • Series of canals that carry materials throughout the cytoplasm…
  • The membranes can appear either rough or smooth…
  • rER is highly developed in cells of the pancreas that secrete digestive enzymes
  • sER is free of ribosomes & is the area in which fats or lipids are synthesized
guess the organelle9
Guess the organelle!
  • The “pancake-like” structures are actually membranous sacs piled up on top of each other…
  • Protein molecules from the rER are stored within this apparatus…
  • The packaged protein membranes move towards the cell membrane & fuse with the membrane to be released as vesicles (exocytosis)
division of labor example
Division of Labor example...
  • Proteins reach the end of the ER
  • A sac forms around the proteins
  • Now called a vesicle
  • Vesicle breaks away from the ER and moves towards the nearest sac of the Golgi body
  • Vesicle fuses & empties protein molecules into the Golgi body
division of labor example13
Division of Labor example...
  • Proteins pass from one sac to another in vesicles formed from the Golgi complex (“mail must be sorted when it comes into the post office”)
  • Many membranes present in cells are interchangeable…they can be recycled from one part of the cell to another (same basic structure)
guess the organelle15
Guess the organelle!
  • Formed by the Golgi bodies
  • Sac-like structures that contain digestive enzymes which break down large molecules & cell parts within the cytoplasm…
  • The swelling & pain associated with arthritis have been linked to the seepage of this organelle…cortisone is thought to strengthen this organelles membrane.
guess the organelle17
Guess the organelle!
  • Tiny threadlike fibers that transport materials throughout the cytoplasm…
  • Made of protein
  • 2 types
  • One is smaller than the other…
special structure of plants
Special Structure of Plants!
  • The organelles discussed to this point are found in BOTH plant & animal cells
  • Plant cells differ in that they can produce their own food using specialized organelles called PLASTIDS
  • The vacuole is a fluid-filled space that occupies much of the cytoplasm. It is a storage space for sugars, minerals, & proteins.
special structure of plants21
Special Structure of Plants!
  • Most plant cells are surrounded by a nonliving cell wall made of cellulose.
  • Protects & supports the plant cell.
plastids
Plastids
  • Chloroplasts specialize in photosynthesis; green pigment chlorophyll
plastids25
Plastids
  • Amyloplasts are storehouses for starch (potato tubers & seeds)
  • Colorless plastids
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