The Cell Cycle
In the cell cycle, this stage happens after S.
G2
True or False! Mitosis requires only 1 phase of duplication.
True!
True or False! Meiosis requires only 1 phase of cell division.
False!
What 3 key features are seen during prophase?
Nucleus breaks down. Chromosomes form. Centrioles generate spindle fibers.
What organelle stores DNA?
Nucleus
Checkpoints
When do our cells use Mitosis?
When repair, growth, or maintenance is needed!
When do our cells use Meiosis?
Reproduction
What key feature is seen during metaphase?
The chromosomes align down the middle of the cell.
What two cells are considered gametes?
Sperm cells and egg cells.
In the cell cycle, this is the stage that happens before S.
G1
How many cells are produced after Mitosis?
2
How many cells are produced after the 2nd division of meiosis?
4
What 3 key features can be seen during Telophase?
The nucleus reforms. The spindle fibers break down. The chromosomes uncoil into DNA.
What are the 3 stages of binary fission, a type of prokaryotic cell division?
Replication
Segregation
Separation
G1, G2, and S are all part of this phase of the cell cycle where cell division does NOT take place.
Interphase
What are the 4 steps of Mitosis?
PMAT! Prophase, Metaphase, Anaphase, Telophase!
How many times does Meiosis perform cytokinesis?
2
What key feature can be seen during Anaphase?
The chromosomes are pulled apart into chromatids at either end of the cell.
What is the primary difference between prokaryotic and eukaryotic cells?
Eukaryotic cells have a nucleus and prokaryotic cells do not.
If a checkpoint is failed, the cell cycle will switch to this phase.
G0
A great white shark's diploid cells contain 82 chromosomes. How many chromosomes will a shark cell have after undergoing mitosis?
82
An octopus' diploid cell has 30 chromosomes. How many chromosomes will an octopus cell have after undergoing meiosis?
15
If a cell fails to complete cytokinesis, what identifiable feature would be seen under a microscope?
Two nuclei
5th period