Cell Cycle Flashcards
What is the cell cycle
Repeating sequence of cellular growth and division during an organism’s life
What are the steps of mitosis
Prophase Metaphase Anaphase Telophase Cytokinesis
The longest phase of the cell cyckle
Interphase
What phases of the cell cycle are known as interphase
First growth
Synthesis
Second growth
What are the five phases of the cell growth
- first growth
- synthesis
- second growth
- mitosis
- cytokinesis
What happens in G1
Cell doubles in size
Enzyme and organelle numbers double
What happens to cells that don’t divide
They stay in interphase or move to G0
Cells don’t ___ nonstop
Replicate
Example of cells that sty in G0 or G1 are
Muscle cells and nerve cells
What happens in G2
- centrioles duplicate, microtubules are made, cell continues to grow
- final preparations are made
What phase is when the chromatin, which is made of DNA , replicates
S phase
During cytokinesis animal cells form a protein belt that establishes a
Cleavage furrow
What begins to break down during prophase
Nuclear membrane
Nucleolus
In multicellular organisms, many cells remain in
Interphase
What are “checkpoints”
Things that trigger or delay phases