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  • Cell Parts: Functions of Plasma Membrane, Cytoplasm, Nucleus & Ribosomes
    The principal parts of a cell, and their functions, are:

    1. Plasma Membrane:

    * Function: Encloses the cell, regulates what enters and exits the cell, maintains cell shape.

    2. Cytoplasm:

    * Function: Gel-like substance that fills the cell and provides a medium for organelles to function.

    3. Nucleus:

    * Function: Control center of the cell, contains genetic material (DNA), directs cell activities, and regulates protein synthesis.

    4. Ribosomes:

    * Function: Sites of protein synthesis, translate genetic information from mRNA into proteins.

    5. Endoplasmic Reticulum (ER):

    * Rough ER: Studded with ribosomes, involved in protein synthesis and modification.

    * Smooth ER: Lacks ribosomes, involved in lipid synthesis, detoxification, and calcium storage.

    6. Golgi Apparatus:

    * Function: Modifies, sorts, and packages proteins and lipids, prepares them for secretion or distribution within the cell.

    7. Lysosomes:

    * Function: Contain digestive enzymes, break down waste materials, worn-out organelles, and engulf foreign substances.

    8. Mitochondria:

    * Function: Powerhouses of the cell, generate energy (ATP) through cellular respiration.

    9. Vacuoles:

    * Function: Storage compartments for water, nutrients, and waste products.

    10. Cytoskeleton:

    * Function: Provides structural support, helps with cell movement and shape, and transports materials within the cell.

    11. Centrioles:

    * Function: Involved in cell division, help with the formation of spindle fibers.

    12. Cell Wall (in plant cells):

    * Function: Rigid outer layer that provides structural support and protection, helps maintain cell shape.

    13. Chloroplasts (in plant cells):

    * Function: Sites of photosynthesis, convert light energy into chemical energy (glucose).

    These are the main parts of a cell, but the specific components and their functions can vary depending on the type of cell and its role in the organism.

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