Cytomembrane System and Cytoskeleton

The Cytomembrane System and The Cytoskeleton Presented by: RLS Group 3 of 7 - Alcaraz The Cytomembrane System What is the Cytomembrane System? Presented by: Hendrix Emmanuel Reyes What is the Cytomembrane System? a network of membranes and organelles that modify, package, and transport lipids...

The Cytomembrane System and The Cytoskeleton Presented by: RLS Group 3 of 7 - Alcaraz The Cytomembrane System What is the Cytomembrane System? Presented by: Hendrix Emmanuel Reyes What is the Cytomembrane System? a network of membranes and organelles that modify, package, and transport lipids and proteins (alter and sort proteins) found in eukaryotic cells also called the “endomembrane system” What is the Cytomembrane System? essential in maintaining the structure and function of a eukaryotic cell composed of the Endoplastic Reticulum, Golgi Bodies, Vesicles, and Nuclear Envelope Parts of the Cytomembrane System Presented by: Ysabelle Nicole Bautista Parts of the Cytomembrane System 1. Endoplasmic reticulum - the site where polypeptide chains (primary structure of proteins) are modified. - has two types, rough and smooth Parts of the Cytomembrane System 1) Rough ER -protein factory for cells -distributes vesicles Parts of the Cytomembrane System 2) Smooth ER - synthesizes lipids -metabolizes carbohydrates -detoxifies drugs and poisons -storage for calcium ions. Parts of the Cytomembrane System 2. Golgi Bodies - processes and packages proteins produced in the rough endoplasmic reticulum Parts of the Cytomembrane System - The golgi apparatus modifies the products of the ER, manufactures certain macromolecules and sorts and packages materials into transport vesicles. Parts of the Cytomembrane System 3. Vesicles -compartments formed by a lipid bilayer separating its contents from the cytoplasm or a fluid-based extracellular environment Parts of the Cytomembrane System Lysosomes - Lysosomes that bud from Golgi bodies take part in intracellular digestion. - contain powerful enzymes that can break down carbohydrates, proteins, nucleic acids, and lipids. Parts of the Cytomembrane System - break down worn out cell parts or molecules so they can be used to build new cellular structures. Parts of the Cytomembrane System Peroxisomes - contain enzymes that digest fatty acids and amino acids. - break down hydrogen peroxide, a toxic byproduct of fatty acid metabolism. Parts of the Cytomembrane System - convert hydrogen peroxide to water and oxygen, or use it in reactions that break down alcohol and other toxins. Functions of the Cytomembrane System Presented by: Julian Jacob Gammad Functions of the Cytomembrane System 1. 2. 3. 4. 5. 6. Protein Synthesis & Secretion Lipid & Steroid Synthesis Detoxification Calcium Storage & Signaling Modification & Sorting of Proteins Recycling of Cellular Components The Cytoskeleton What is the Cytoskeleton? Presented by: Mavreen Gail Gonzales What is the Cytoskeleton? a network of proteins within a cell provides structure and support also enables movement and division What is the Cytoskeleton made of? Presented by: Francis Gabriel Arenas What Is the Cytoskeleton Made Of? made of proteins provides mechanical support to the cell and its cytoplasmic constituents Cytoskeletons consist of three major classes of elements Cytoskeleton: Types of Fibers Presented by: Nelie Reine F. Tamondong Types of Fibers microfilaments Known as “Actin Filaments" Has a diameter of 7 nm Function in cellular movement Made of two intertwined strands of a globular protein (Actin) Types of Fibers microfilaments Provide rigidity and shape to the cell Can depolymerize or disassemble and reform quickly Types of Fibers diagram (G-Actin) (F-Actin) Types of Fibers Intermediate filaments Consist of several intertwined strands of fibrous proteins Diameter is 8-10nm Function is purely structural Bear tension thus maintains shape of the cell Types of Fibers Intermediate filaments Anchor the nucleus and other organelles in place Most diverse group of cytoskeletal elements Types of Fibers Intermediate filaments Types of Fibers MICROTUBULES Small and hollow tubes Its walls consist of 13 polymerized dimers of α-tubulin and β-tubulin structural elements of flagella, cilia, and centrioles Diameter of 25 nm Types of Fibers MICROTUBULES Molecular Structure Functions of the Cytoskeleton Presented by: Mavreen Gail Gonzales Functions of the Cytoskeleton Gives cells their shape and organizes the cytoplasm Allows cells to move Regulates cell division Transports materials and organelles within the cell Allows cells to adhere to other cells Allows cells to communicate with other cells Quiz Questionnaire: 1. This system alters and sorts proteins. 2. This is what composes the cytoskeleton. 3. The _____ synthesizes certain liquids. 4. The _____ configures cells and organizes cytoplasm. 5. _____ engages in many operations of cells. Thank you! RLS Group 3 Members: Arenas, Gammad, Reyes, Bautista, Gonzales, Tamondong Topic: Cytomembrane System and Cytoskeleton