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Cell Function (2)

Organelles and their functions

What are Organelles? Distinct structures only found in eukaryotic cells that perform specific functions.
What is the function of the Nucleus? - Contains chromosomes composed of DNA and proteins - Information in chromosomes controls and produces proteins. - Proteins coordinate the cell's activities
What is the function of the Nucleolus? - Makes the parts that combine to form ribosomes - Ribosomes are the cell's protein-producing factories
What is the function of the Cell Membrane (or Plasma Membrane) - Encloses cell contents - Controls movement of materials into and out of the cell - Helps maintain cell shape - Communicates with neighboring cells
What is the function of the cytosol(not an organelle)? - suspends organelles - is the location of some chemical reactions
What is the function of the Rough Endoplasmic Reticulum (RER)? - Produces, processes and transports proteins. - Parts pinch off to become vesicles for the transport of proteins to the membrane or to other organelles including the Golgi bodies.
What is the function of Ribosomes? - produces proteins
What is the function of the Smooth Endoplasmic Reticulum? - Involved with production of fats, steroids and the detoxification of drugs and poison.
What is the function of the Golgi Apparatus (or Golgi Body)? - Transports, modifies and packages proteins and lipids into containers called vesicles for delivery to targeted destinations.
What happens once the vesicles reach their destination (cell wall)? - They fuse with it, releasing their contents to the outside of the cell by a process called exocytosis.
What is the function of the Mitochondria? - Release energy for use by the cell (aerobic cellular respiration) - This chemical reaction happens of the inner membrane of the mitochondria, increases surface area and allows the small organelle to do as much work as possible.
What is the function of Plastids (Chloroplasts only required)? - Photosynthesis - Chlorophyll absorbs light energy. - Enzymes used to carry out photosynthesis are located in the matrix of the chloroplast.
What is the function of the Vacuole? - To provide support and storage(food, ions, sugar).
What is the function of the Cell Wall? - Maintains shape of cell - Provides support -Allows other substances to pass through.
Created by: zarap103