Answer:
The other systems I am aware of are...
Immune System: fights off disease-causing germs and other harmful substances
Respiratory System: works to move oxygen throughout the body and clean out waste gases like carbon dioxide
Cardiovascular System: delivers oxygen, nutrients, hormones, and other important substances to cells and organs in the body using blood
Nervous System: transmit signals between different parts of the body so we can move our muscles
Digestive System: breaks down food into small molecules, which are then absorbed into the body
Excretory System: removes waste from the human body
<span>Cells do not live forever. They either divide on two new cells through mitosis or die. Mitosis is a highly controlled process because if something goes wrong in mitosis, the healthy cells will divide uncontrollably. New cells, cancer cells, will also divide of control.
Cancer cells differ from normal cells:
</span>- they are of irregular size and shape,<span>
- their nucleus increases in size,
- shape and density of the nucleus are changed,
- chromatin is changed,
- nucleus segmentation often occurs,
- the cytoplasm is scarce,
- the cytoplasm changes its colour (either pale or intensely coloured)
- mRNA is accumulated in the cytoplasm,
- mitochondria decrease their volume,
- different organelles in the cytoplasm undergo changes.
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Archaea is the <span>domain that is an unicellular prokaryotes that have cell walls that do not contain peptidoglycan.</span>
