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Class 11 biology CBSE hand notes

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A cell is the basic structural and functional unit of all living organisms. Cells can be broadly categorized into two types: Prokaryotic Cells: Characteristics: These cells lack a nucleus and other membrane-bound organelles. They are typically smaller and simpler. Examples: Bacteria and Archaea. Eukaryotic Cells: Characteristics: These cells have a nucleus that houses DNA and various membrane-bound organelles (e.g., mitochondria, endoplasmic reticulum, Golgi apparatus). They are generally larger and more complex.

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