A cell is the basic structural, functional, and biological unit of all known living organisms. It is often called the “building block of life.”
Key Information:
– Discovery: First observed by Robert Hooke in 1665.
– Two Main Types:
– Prokaryotic Cells: Simple cells without a nucleus (e.g., bacteria).
– Eukaryotic Cells: Complex cells with a nucleus and organelles (e.g., plants, animals, fungi).
– Main Parts:
– Cell Membrane: The outer layer that controls what enters and exits.
– Nucleus: The “brain” that contains DNA and controls activities.
– Cytoplasm: The jelly-like substance where organelles float.
Would you like me to explain the difference between plant and animal cells?
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