Phases of Mitosis
What is the abbreviation for the phases of Mitosis?
PMAT
What are the three processes in the cell cycle?
Interphase, Mitosis, Cytokinesis
What happens in the nucleus before mitosis? (S phase of interphase)
DNA is duplicated.
In metaphase, chromosomes line up in the middle.
True.
Most of the cell cycle is spent in ____________.
Interphase
What are the four phases of mitosis?
Prophase, Metaphase, Anaphase, Telephase
What will happen to the cell cycle if the cell fails a checkpoint?
the cell cycle will stop.
What is the point in the middle of a chromosome called?
centromere
In telophase, the chromosomes split into 2 sister chromatids and they reach opposite poles.
False. Yes, they do reach opposite poles but they don't split into 2 sister chromatids in this phase
Cytokinesis divides the ___________.
cytoplasm
What happens in Prophase? (2 things)
The nuclear envelope disappears and chromatin coil into chromosomes.
What is the difference between Chromatin, Chromosomes, and Chromatids?
Chromatin is the loose DNA before cell division. Chromosomes are the coiled DNA that is seen during cell division. Chromatids are the copies of chromosomes that are connected and later divided.
What are chromosomes? What happens to them when the cell divides?
They are structures that contain DNA. When a cell divides, they are duplicated and then equally divided.
It is important for a cell's survival to have a low surface area to volume ratio so that nutrients can be absorbed faster.
False. It is better for a cell to have a high surface area to volume ratio.
When cells divide, they tightly pack their DNA into __________.
chromosomes
Which phase of the cell cycle do the spindle fibers disappear?
Telephase
Why are chromosomes copied?
So that the new cells have the same genetic information as the original cell.
What do spindle fibers do?
They help the chromosomes split apart and move toward opposite poles.
Spindle fibers form in Metaphase.
Binary Fission occurs in _________ cells
Prokaryotic
What's the difference between mitosis and cytokinesis?
Mitosis is the division of the cell. Cytokinesis is what splits the cytoplasm after mitosis.
What would happen if cells didn't divide? (2 major problems)
instructions in DNA would overload and the cell wouldn't exchange materials quick enough.
What does the cell membrane do when in cytokinesis?
It pinches the two cells so that they can separate.
In animal cells, the cell membrane pinches together during cytokinesis. In plant cells, a cell plate grows to divide the new cells.
True
In the G1 stage of interphase, the DNA ____.
stays the same