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1. The main events of the cell cycle:
The main event of the cell cycle is the cell grows, prepares for division, and splits to form two daughter cells.


2. Describe what happens during each of the four phases of mitosis.

Prophase: chromatin condense into chromosomes. The centrioles separate, and a spindle begins to form. The nuclear membrane breaks down.

Metaphase: chromosomes line up across the center of the cell. Microtubules connect to the centromere of each chromosome to poles of a spindle.

Anaphase: The sister chromatins separate into individual chromosomes and are moved apart.

Telophase: The chromosomes gather at opposite ends of the cell and lose their distinct shapes. Two nuclear membranes form.


3. What happens during interphase?
The cell grows and replicates its DNA and centrioles.


4. What are chromosomes made of?
DNA


5. How do prokaryotic cells divide?

The usual method of prokaryote cell division is called binary fission. The prokaryotic chromosome is a single DNA molecule that first replicates, then attaches each duplicate to a different part of the cell membrane. When the cell begins to pull away, the replicate and original chromosomes are separated. Following cell splitting there are then two cells of identical genetic composition.



6. How is the cytokinesis in plant cells similiar to cytokinesis in animal cells? How is it different?
In animal cells the cell membranes drawn inward until the cytoplasm is pinched into nearly two same sized parts.
In a plant cell a structure called the cell plate forms midway between the divided nuclei.