what are the steps in the cell cycle and what does each step do?

Answer 1

Interphase
Mitosis

Interphase:

G1 phase: The longest phase in the cell cycle, cell would grow in size and manufacture the required proteins to for the cell division until the appropriate time or when a signal comes in and changes the phase into S.

S phase: Replicate DNA. There are controls to ensure that there is only one copy of each chromosome is copied. After the DNA has been replicated, it enters the G2 phase.

G2 phase: Cell continues to grow make all essentials organelles. When all the required stuffs are made, a signal would come in and the cell enters the mitotic phase.

Mitosis, Prophase: Chromatin in the nucleus begins to condense and becomes visible chromosomes under microscope

Metaphase: Spindle fibers align the chromosomes along the middle of the cell nucleus. This organization helps to ensure that in the next phase, when the chromosomes are separated, each new nucleus will receive one copy of each chromosome.

Anaphase: The proteins that bind sister chromatids together are cleaved, allowing them to separate. Chromatids then turns into chromosome and are pulled apart by kinetochore and towards the centrosome. Nonkinetochore then elongates and pushes centrosome away

Telophase: The nonkinetochore continues to elongate and pushes centrosome away. Cytokinesis occurs. The cytoplasm is then split into both cells and using fragments left behind, the cell continues to form a nuclear envelope.

Answer 2

Look it up online. There should be PLENTY of info out there on that. It's basic biology stuff. Or it should be in your textbook, since this sounds like a homework question.

Good luck!

Answer 3

Here ya go!

http://www.cellsalive.com/cell_cycle.htm