Cell Cycle 1
What are the two main phases of the cell cycle?
Interphase
Mitosis/cytokinesis
What takes place during the G1 phase
Growth to full size
Normal cell functions
Most of the time a cell is in this phase
What takes place during the G2 phase of interphase?
Cell grows in preparation for division
organelles are duplicated
How do the cells compare to one another after cytokinesis?
They are identical
What happens when a cell carries out mitosis out of control?
cancer
Which phase of the cell cycle is the period of growth and regular functions?
Interphase
During which phase do the nucleus and cytoplasm divide?
Mitosis/Cytokinesis
How many stages are there in the Interphase phase of the cell cycle?
3
What occurs in G0?
Cells are fully formed and are removed from the cell cycle.
What are the 3 stages of Interphase?
G1, S, G2
What are the four phases of mitosis in order?
Prophase, metaphase, anaphase, telophase
What happens during the S phase of interphase?
Duplication of DNA
What happens in the S stage of Interphase?
DNA replication
What happens in the G2 phase of Interphase?
duplication of organelles
What happens during cytokinesis?
Cytoplasm and its contents divide and form 2 identical cells.
What is the difference between mitosis and cytokinesis?
In mitosis, the nucleus and its contents divide.
In cytokinesis, the cytoplasm and its contents divide.
What makes up a chromosome?
DNA
2 sister chromatids attached at the center by a centromere.
What are the phases of interphase?
G1, S, G2
G0
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.
The human body regularly sheds and replaces its skin cells. Which process is directly responsible for replacing these cells?
mitosis
What happens during the 3 stages of interphase?
Rapid growth and replication of organelles and DNA, preparation for cell division.
What is produced at the end of the Mitosis?
2 identical daughter cells that are identical to the parent cell
How does a cell at the end of the first phase(interphase) of the cell cycle differ from a cell at the end of the second phase(mitosis)?
At the end of the first phase, a cell has grown, organelles have been replicated, chromosomes (DNA) have been replicated.
At the end of the 2nd, chromosomes and cytoplasm have been divided. Cell has become 2 identical cells.
What are the 4 parts in the mitosis phase of the cell cycle?
metaphase, anaphase, telophase, prophase
What occurs during cytokinesis?
division of the cytoplasm
division of organelles