Learn: Cell Structure, Organelles and Microscopy Skills

Welcome!Today, we're exploring cell structure, the function of organelles, and the microscopy skills needed to study them. This forms the foundation for understanding all biological systems.

What is Cell Structure?Cells are the basic building blocks of life. They contain specialised structures called organelles, each with a specific function, working together to keep the cell alive and functional.

Animal and Plant CellsAnimal and plant cells share some organelles, like the nucleus (which controls activities), but plant cells also have unique structures like the cell wall and chloroplasts.

Prokaryotic vs Eukaryotic CellsProkaryotic cells (e.g., bacteria) lack a nucleus and membrane-bound organelles, while eukaryotic cells (e.g., plants and animals) have these structures. This distinction is key to understanding cellular diversity.

Microscopy BasicsMicroscopes allow us to observe cells and their organelles. The light microscope is used for basic cell structures, while the electron microscope reveals smaller details like ribosomes.

Key Organelles and Their FunctionsHere are some important organelles:Mitochondria: Produces energy through respiration.Ribosomes: Synthesise proteins.Golgi apparatus: Modifies and packages proteins.Chloroplasts: Site of photosynthesis in plant cells.

Microscopy SkillsWhen using a microscope, always start with a low magnification and adjust focus carefully. For higher detail, increase magnification and use fine focus. Staining techniques help highlight specific cell structures.

Review Time!Great work so far! You've learned about cell structure, organelles, and microscopy. Now, let's test your understanding with a few review questions.