Explain the fundamental principles of cell theory. Compare and contrast the structural and functional differences between prokaryotic and eukaryotic cells.

Cell theory is one of the cornerstones of biology, providing a fundamental framework for understanding the structure and function of living organisms. The theory is based on three key principles:

1. All living organisms are composed of one or more cells: This principle suggests that cells are the basic unit of life. Whether unicellular organisms like bacteria or multicellular organisms like humans, every living being is made up of cells.
2. The cell is the basic unit of structure and organization in organisms: Cells are not just the smallest unit of life; they are also the foundational building blocks that form tissues, organs, and systems in multicellular organisms. This principle emphasizes that all the biochemical processes necessary for life occur within cells.
3. All cells arise from pre-existing cells: This principle, proposed by Rudolf Virchow, contradicts the idea of spontaneous generation. It states that new cells are formed through the division of existing cells, ensuring continuity ______ _________ _______ ________ __________ _________ _______ ____ ___ _____ __________.
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