Cell Theory
The chapter discusses the fundamental concepts of cell theory, defining the critical roles cells play as the basic unit of life, their structures, types, and functions. It further explores eukaryotic and prokaryotic cells, their ultrastructures, membrane dynamics, and processes of cell division, including mitosis. Additionally, the chapter emphasizes the significance of microscopy and cell fractionation techniques in understanding cellular biology.
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Sections
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1.2Exceptions To Cell Theory
This section explores exceptions to the core principles of cell theory,...
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1.5Membrane Structure And Function
Biological membranes, composed mainly of lipids and proteins, control what...
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1.7Techniques: Microscopy And Cell Fractionation
What we have learnt
- All living organisms comprise one or more cells, the basic unit of structure and function.
- Cells arise from pre-existing cells, emphasizing their role in biological reproduction.
- Prokaryotic cells are simpler and smaller than eukaryotic cells, which have more complex structures.
Key Concepts
- -- Cell Theory
- The scientific theory that states all living organisms are made of cells, the cell is the basic unit of life, and all cells arise from pre-existing cells.
- -- Prokaryotic Cells
- Single-celled organisms that lack a nucleus and membrane-bound organelles, such as bacteria and Archaea.
- -- Eukaryotic Cells
- Complex cells that contain a nucleus and membrane-bound organelles, including protists, fungi, plants, and animals.
- -- Mitosis
- A process of cell division that results in two genetically identical daughter cells from a single parent cell.
- -- Fluid Mosaic Model
- A model that describes the structure of cell membranes as a mosaic of diverse protein molecules embedded in a flexible lipid bilayer.
Additional Learning Materials
Supplementary resources to enhance your learning experience.