Cell Cycle 1
What are the three main phases of the cell cycle?
Interphase
Mitosis
Cytokinesis
During which phase of the cell cycle is chromatin duplicated?
Interphase
During which main phase of the cell cycle do mitosis and cytokinesis occur?
Mitotic
What each half of a replicated chromosome called
sister chromatid
apoptosis
what happens during telophase (3 events)
Nuclear envelope reappears
chromosomes decondense to chromatin
spindle fibers disappear
what occurs during prophase (3 events)
Nuclear envelope disappears
chromatin condenses to chromosomes
spindle fibers form from centrioles
How many stages are there in the Interphase phase of the cell cycle?
what happens during metaphase
chromosomes line up in the middle of the cell
what happens during anaphase
what moves chromosomes around the cell
spindle fibers
What happens during the G1 stage in the Interphase?
Rapid growth and replication of organelles
What happens in the S stage of Interphase?
DNA replication
What happens in the G2 phase of Interphase?
Preparation for cell division
What happens during cytokinesis?
Cytoplasm and its contents divide and form 2 identical cells.
What is the difference between mitosis and cytokinesis?
In cytokinesis, the cytoplasm and its contents divide.
What makes up a chromosome?
2 sister chromatids attached at the center by a centromere.
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.
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.
How are interphase and the mitotic phase related?
Interphase prepares the cell to reproduce in the mitotic phase.
what is the cell checking for at anaphase
make sure the sister chromatids have been separated correctly
What is produced at the end of the cell cycle?
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 phase?
At the end of the first phase, a cell has grown, organelles have been replicated, chromosomes 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 mitotic phase of the cell cycle?
metaphase, anaphase, telophase, prophase
Where are the three main checkpoints in the cell cycles
endog G2
Mitosis (anaphase)