Cell Cycle
What are the three phases of the cell cycle?
Interphase
Mitosis (Meiosis for sexual reproduction)
Interphase
During which phase of the cell cycle is chromatin (chromosomes) duplicated?
Interphase
During which main phase of the cell cycle is the cytoplasm divided?
Cytokinesis
How is the cell cycle important to multicellular organisms?
It allows them to produce more cells for growth, to replace cells, and to repair damage.
Which phase of the cell cycle is the period of growth and development?
Interphase
During which phase do the nucleus and DNA divide?
Mitotic
How many stages are there in the Interphase phase of the cell cycle?
3
How are interphase and the mitotic phase related?
Interphase prepares the cell to reproduce in the mitotic phase.
What are the 3 stages of of the Cell Cycle?
Interphase - Mitosis - Cytokinesis
What happens during the Interphase before the cell prepares for division?
Cell is functioning normally
Why does the DNA have to be duplicated before the cell can divide?
An organisms DNA is their instructions for life, so without DNA there can not be life. IF the cell were to divide and the two new cells did not have the correct number of DNA, or a complete set then the two new organisms would not function and die.
What is the difference between mitosis and cytokinesis?
In mitosis, the nucleus and its contents divide into 2 identical nuclei.
In cytokinesis, the cytoplasm and its contents divide, spliting the cell into two cells.
During the S phase of Interphase a cell's chromosome count when from 8 to 16. What happens during S phase of interphase?
The DNA is duplicated.
How is the cell cycle important to some unicellular organisms?
It allows some unicellular organisms to reproudce by producing 2 identical organisms from 1 parent organism.
What happens during interphase?
The cell completes normal functions and lives its day to day life.
Once the cell is ready to divide it will growth and replicate its organelles, replication of DNA, and preparation for cell division.
A cell spends 90% of its life in Interphase.
What is produced at the end of the cell cycle with Mitosis?
2 identical daughter cells that are identical to the parent cell
How does a cell at the end of the first phase of the cell cycle differ from a cell at the end of the second/third phase?
At the end of the first phase (interphase), a cell has grown, organelles have been replicated, chromosomes have been replicated. At the end of the 2nd(Mitosis/Cytokinesis), chromosomes and cytoplasm have been divided. Cell has become 2 identical cells.