BBCCT-111 – Membrane Biology and Bioenergetics

Differentiate between Simple and Facilitated diffusion

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Differentiate between Simple and Facilitated Diffusion Simple and facilitated diffusion are both passive transport mechanisms by which molecules move across biological membranes. However, they differ in the mechanisms and types of molecules involved. Simple Diffusion Occurs directly through the lipid bilayer without the involvement of membrane proteins. Primarily allows the passage of small, non-polar molecules […]

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Explain lipid raft

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Explain Lipid Raft Lipid rafts are specialized, dynamic microdomains within the plasma membrane, enriched in cholesterol, sphingolipids, and certain proteins. They play essential roles in organizing membrane structure and function, particularly in processes like signaling, trafficking, and membrane fluidity regulation. Composition High concentration of cholesterol and sphingolipids (e.g., sphingomyelin, glycosphingolipids). Contain specific proteins such as

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Explain v-SNARE and t-SNARE

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Explain v-SNARE and t-SNARE SNARE proteins are essential components of the vesicular transport system within eukaryotic cells. These proteins mediate the specific docking and fusion of vesicles with their target membranes, ensuring accurate delivery of cargo such as proteins, neurotransmitters, or hormones. v-SNARE (Vesicle-SNARE) v-SNAREs are located on the membrane of transport vesicles. A commonly

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Describe various types of lipids found in a biomembrane

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Describe Various Types of Lipids Found in a Biomembrane Biomembranes consist of a complex mixture of lipids that contribute to the membrane’s structural integrity, functionality, and dynamic behavior. The three major types of lipids present in biological membranes are phospholipids, glycolipids, and sterols. Each plays a unique role in membrane structure and function. 1. Phospholipids

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Describe the general composition of a biomembrane

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Describe the General Composition of a Biomembrane A biomembrane, also known as a biological membrane, is a complex structure that forms the boundary of cells and organelles, maintaining the internal environment and facilitating selective transport and communication. The primary structure of a biomembrane is the lipid bilayer, which consists mainly of phospholipids arranged in two

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