1. What is the nucleus in a cell?
2. Which of the following is a well-known signalling pathway involved in cell response to external stimuli?
3. What is the primary role of mitosis in the cell cycle?
Cell membrane — role?
Controls substance exchange and protection.
Signalling pathway — mechanism?
Transmits external signals via molecular cascades.
Mitosis stages — order?
Prophase, metaphase, anaphase, telophase.
Prokaryotic Cells — definition?
Simple, unicellular, lack nucleus.
Eukaryotic Cells — features?
Nucleus, membrane-bound organelles.
Cell Membrane — role?
Controls substance exchange, phospholipid bilayer.
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