13516865
Description
Mind Map by Naomi Buck, updated more than 1 year ago
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Created by Naomi Buck
over 6 years ago
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The Cell Cycle
- Growth Phase 1
- Cellular contents apart from chromosomes are duplicated.
- Cellular contents apart from chromosomes are duplicated.
- Growth Phase 1 Checkpoint
- At the end of G1 the cells are checked for specific markers.
- Checked for...
- Nutrients
- Growth Factors
- DNA damage
- Cell Size
- Cell Size
- DNA damage
- Growth Factors
- Nutrients
- If all markers are satisfied the cell is triggered to enter the Synthesis phase. If not the cell enters G0
- Checked for...
- At the end of G1 the cells are checked for specific markers.
- G0
- Where the cell enters permanent cell arrest (no longer viable) if...
- Cell becomes specialised (no longer able to divide)
- Is no longer able to carry out it's functions indefinately
- If DNA is damaged (harmful mutation)
- Cell becomes specialised (no longer able to divide)
- The majority of cells (normal) divide a limited
number of times eventually becoming senescent
- Senescent - A cell that is no
longer capable of dividing but
still alive and metabolically
active
- Senescent - A cell that is no
longer capable of dividing but
still alive and metabolically
active
- Where the cell enters permanent cell arrest (no longer viable) if...
- Synthesis Phase
- Each of the chromosomes in the cell is duplicated
- Each of the chromosomes in the cell is duplicated
- Growth Phase 2
- The cell checks the duplicated chromosomes for error
- Makes repairs if necessary
- Makes repairs if necessary
- The cell checks the duplicated chromosomes for error
- Growth Phase 2 Checkpoint
- At the end of G2 phase the cell is again checked for specific markers.
- Cell checked for...
- Size of cell
- DNA replication
- DNA damage
- DNA damage
- DNA replication
- Size of cell
- Cell checked for...
- At the end of G2 phase the cell is again checked for specific markers.
- Mitotic Phase
- Mitosis
- Prophase
- First phase of mitosis Chromosomes become visible,
nuclear envelop dissolves, spindle forms Chromatin
condenses into chromosomes
- First phase of mitosis Chromosomes become visible,
nuclear envelop dissolves, spindle forms Chromatin
condenses into chromosomes
- Metaphase
- Second phase of mitosis Chromosomes line up in the
middle of the cell Metaphase Plate
- Second phase of mitosis Chromosomes line up in the
middle of the cell Metaphase Plate
- Anaphase
- Third phase of mitosis during which chromatids separate and are pulled to opposite sides of the cell
- Third phase of mitosis during which chromatids separate and are pulled to opposite sides of the cell
- Telophase
- the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle.
The chromosomes start to uncoil and the nucleolus is formed and the nuclear envelope reforms.
- the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle.
The chromosomes start to uncoil and the nucleolus is formed and the nuclear envelope reforms.
- Prophase
- Cytokinesis
- After Mitosis the cytoplasm divides and two cells are produced
- Starts in Telophase
- After Mitosis the cytoplasm divides and two cells are produced
- Mitosis
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