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Private teachers in Nassau

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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
Graduated with a Master’s in Information and Communication Sciences, I offer online French courses for learners of all levels (beginner to advanced). With four years of experience in a Language Training Organization, I have had the opportunity to support learners—both native speakers, English speakers, and Spanish speakers—with various needs: - Preparation for official certification exams, - Business training focused on job interview preparation, product presentations, or conference preparation, Advanced level courses emphasizing public speaking, spelling, and syntax, - Conversational training to specifically enhance your speaking skills and work on pronunciation, - Beginner-level training for a thorough introduction to French, including in-depth work on phonetics, grammar, and spoken expression to help you engage confidently in your first conversations. To enhance the interactivity of the lessons and make them more dynamic, I use various types of educational materials: YouTube videos, audio clips (songs, radio shows, etc.), online exercises, and PowerPoint/PDF files with corrections. For advanced levels, it is ideal to conduct our exchanges solely in French to fully immerse you in the language. For beginner levels, reassurance is important, so we can use English or Spanish to help you feel more comfortable. After each lesson, I will provide you with a detailed report with tips to help you continue practicing independently. Enjoy adaptive courses for a true immersion in the heart of the French language. Contact me to start a new linguistic adventure! See you soon!
French
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Italian lessons. Italian lessons online or in person. (Rome)
Emma
Emma is an amazing teacher. My husband and I have different learning styles and Emma is able to work with both. She is very knowledgeable, engaging, and enthusiastic. We thoroughly enjoy her company. We can only offer our highest recommendation - if you want to learn Italian, study with Emma!
Review by GRACE
Work out to become the best version of yourself. Détermination, hard work, and patience are the keywords. (Versoix)
William
William coached my 13-year old son to improve his stamina, vertical and overall physical fitness. The exercises were relevant and my son was happy to undertake them mainly because of William’s friendly approach.
Review by DEBORAH
Certified Mathematics Teacher, Masters in Mathematics, 13 years of experience – Specialist in high school, middle school and 1st year Math SUP students (Antananarivo)
Mohamed
My 15 year old son is very happy after the first 90 minutes with Mohamed and says he understands much more than before. We are booking 5 more sessions with Mohamed :) Thank you, we are very grateful!
Review by MARIJA