mitosis

How can body cells produce new cells and divide?

They divide by mitosis which is a process in cell cycle so they produce new cells through the cell cycle

What is the mitosis/what is the process?

Mitosis is a stage in the cell cycle and it’s when a cell reproduces itself by splitting to form two identical offspring

What do multicellular organisms use mitosis for and why do they need it?

Multicellular eukaryotic organisms require a continuous supply of new cells for growth

Especially young organisms to grow and older organisms to replace lost cells(skin cells which continuously fall of bodies

The process in which these cells are generated is called cell cycle

What are the 3 main steps in cell cycle?

Growth

DNA replication and mitosis

Division

What is the process of cell cycle?

Growth and replication:

1) in a cell that’s not dividing the DNA. Is all spread out in long strings

2) before it divides the cell has to grow and increase the amount of subcellular structures such as mitochondria and ribosomes

3) It then duplicates its DNA so there’s one copy of each chromosome for each new cell. The DNA is copied and forms X shaped chromosomes each ‘arm’ of the chromosome is the exactly duplicate of the other.

Mitosis:

4) The chromosomes line up at the centre of the cell and cell fibres pull them apart.The two arms of each chromosome go to opposite end of the cell called poles.

5) membranes form around each of the sets of chromosomes. these become the nuclei of the two new cells the nucleus has divided

DIVISON:

6) cytoplasm and cell membrane divide

Cell membrane cytoplasm pull apart forming two Daughter cells half ended up in left side of half on right side each or the same DNA so identical

These daughter cells can then contribute to growth development and repair and start cell cycle all over again