Transport vesicles are small, membranous spheres composed of a single lipid bilayer with a hollow interior that function to carry molecules within a cell.

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The endomembrane system is composed of several interconnected organelles and structures, which include the endoplasmic reticulum, the Golgi apparatus, lysosomes, and vesicles.

Components of the Endomembrane System

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Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

Transport Vesicles

Lysosomes are membrane-bound organelles belonging to the endomembrane system that contain digestive enzymes. They function to break down external particles, such as food, microorganisms, and immune complexes, as well as internal debris like damaged organelles, while keeping these enzymes compartmentalized to protect the cytoplasm.

Lysosomes

Exocytosis is the process by which secretory vesicles move toward and fuse with the plasma membrane to release their contents outside the cell. Cells utilize exocytosis to eliminate waste products and to secrete chemical signals that other cells can receive.

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