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Cell Cycle
Created @December 2, 2024 9:44 PM
Class Cells to Systems
Cell cycle
Instructions for producing cell parts
DNA must be replicated
Every new cell has identical copy of DNA
Mechanisms in place to ensure copies are identical
Interphase
G1
Cell grows larger
more organelles are produced
“Checkpoint” is established
Ensures no damage is present
S Phase
Rapid DNA replication and duplication of the centrosome for DNA
separation
G2
Cell increases in size
reorganises cell contents
checks for DNA structure
Cell Cycle 1
, Mitosis
Nuclear division
Cytokinesis
Cells moving apart
Mitosis
Cell division producing two identical cells
Daughter cell gets perfect cell of chromosomes
Too few/ too many chromos can lead to improper function in cells
Mitosis Steps
Early prophase
Chromosome division
chromos begin to condense
Late prophase/ prometaphase
Spindle sorts compact chromosomes
Nuclear envelope breaks down
Metaphase
Chromosomes align on centre line
Attaches to spindle fibres from opposite sides
Anaphase
Chromatids separated
pulled to opposite ends of cell
Telophase
Cell has nearly completed dividing
normal structures come to be
Cell Cycle 2
Cell Cycle
Created @December 2, 2024 9:44 PM
Class Cells to Systems
Cell cycle
Instructions for producing cell parts
DNA must be replicated
Every new cell has identical copy of DNA
Mechanisms in place to ensure copies are identical
Interphase
G1
Cell grows larger
more organelles are produced
“Checkpoint” is established
Ensures no damage is present
S Phase
Rapid DNA replication and duplication of the centrosome for DNA
separation
G2
Cell increases in size
reorganises cell contents
checks for DNA structure
Cell Cycle 1
, Mitosis
Nuclear division
Cytokinesis
Cells moving apart
Mitosis
Cell division producing two identical cells
Daughter cell gets perfect cell of chromosomes
Too few/ too many chromos can lead to improper function in cells
Mitosis Steps
Early prophase
Chromosome division
chromos begin to condense
Late prophase/ prometaphase
Spindle sorts compact chromosomes
Nuclear envelope breaks down
Metaphase
Chromosomes align on centre line
Attaches to spindle fibres from opposite sides
Anaphase
Chromatids separated
pulled to opposite ends of cell
Telophase
Cell has nearly completed dividing
normal structures come to be
Cell Cycle 2
