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Fatiha - Dellys, AlgeriaRecently active£14
£14plasma membrane: structure, function, properties
Structure of the plasma membrane The plasma membrane is mainly composed of: Phospholipids: These amphipathic molecules (having both a hydrophilic and a hydrophobic part) are organized into a double lipid layer. This structure gives the membrane its semi-permeable barrier property. Proteins: They are integrated into the lipid bilayer and perform various functions: transport of molecules, reception of signals, cellular recognition, etc. Carbohydrates: Linked to lipids (glycolipids) or proteins (glycoproteins), they play an important role in cell recognition and cellular interactions. Function of the plasma membrane Selective barrier: The plasma membrane allows the selective passage of certain molecules while preventing others. Transport: Membrane proteins provide passive (simple or facilitated diffusion) or active (pumps) transport of molecules across the membrane. Receiving signals: Membrane receptors allow the cell to detect and respond to signals from its environment. Cell recognition: Molecules present on the surface of the membrane allow cells to recognize and interact with each other. Maintenance of homeostasis: The plasma membrane helps maintain a stable intracellular environment by regulating exchanges between the cell and its environment. Properties of the plasma membrane Fluidity: The plasma membrane is not a rigid structure but rather fluid, which allows it to deform and change shape. Asymmetry: The two faces of the plasma membrane have different compositions, which gives the membrane polarity. Plasma membrane models Fluid mosaic model: This model, the most accepted, describes the membrane as a constantly changing mosaic of lipids and proteins.
Cell biology
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Jason - Kazan’, RussiaRecently active£54
£54"Game On: Mastering English through Video Game Analysis"Level up your English language skills and dive into the world of video games!
Course Description:_ Level up your English language skills and dive into the world of video games! In this unique course, you'll improve your reading, writing, and speaking abilities by analyzing the characters, storyline, and gameplay mechanics of a popular video game. Through interactive lessons, discussions, and activities, you'll: 1. Develop essential English language skills, including grammar, vocabulary, and pronunciation. 2. Analyze video game characters, motivations, and relationships to improve reading comprehension and critical thinking. 3. Examine the game's narrative structure, plot twists, and themes to enhance writing and storytelling skills. 4. Engage in discussions and debates about the game's mechanics, level design, and player experience to improve speaking and listening skills. 5. Cultivate problem-solving, critical thinking, and collaboration skills through game-inspired challenges and projects. _Course Objectives:_ - Improve English language proficiency - Develop critical thinking and analytical skills - Enhance creativity and self-expression - Foster collaboration and problem-solving skills - Build confidence in using English in everyday situations _Course Outline:_ Module 1: Introduction to English Language and Video Game Analysis - English language basics: grammar, vocabulary, and pronunciation - Analyzing video game characters and motivations Module 2: English Language Development through Character Analysis - English language skills: reading, writing, listening, and speaking - Examining character relationships, conflicts, and development Module 3: Narrative Structure and Gameplay Mechanics - Analyzing the game's storyline, plot twists, and themes - Understanding gameplay mechanics, level design, and player experience Module 4: Creative Expression and Self-Presentation - Writing and presenting: character backstories, game reviews, and walkthroughs - Building confidence: self-expression, feedback, and reflection _Target Audience:_ - English language learners - Video game enthusiasts - Individuals seeking to improve their critical thinking and analytical skills - Those looking to enhance their creativity and self-expression _Course Format:_ - Online lessons and discussions - Interactive activities and hands-on projects - Personalized feedback and support _Course Duration:_ - 12 weeks (3 months) Join the quest and power up your English language skills! Enroll in "Game On" today and start analyzing your way to language mastery!
English · Video games
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