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All organisms (living things) can be
classified into two categories:
Unicellular (Single Celled) and Multicellular
Unicellular organisms are made of
only ONE CELL!
Multi-cellular organisms are made of
many cells.
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Made of more than one
cell and could be made of
millions/trillions of cells.
Are known as Eukaryotic
organisms which means
they contain a nucleus
inside each cell.
Can be heterotrophic
because they are unable
to obtain its carbon from
carbon dioxide. Instead,
they obtain carbon by
feeding on material
present in other
organisms, living or
dead.
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Examples: humans, and
animals.
Can also be autotrophic
They do not need to
feed on other
organisms, because they
get the carbon
compounds they need
for energy using
sunlight and carbon
dioxide.
(Photosynthesis)
Examples: Plants or
protists
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Are only made of ONE cell!
They carry out the functions of a living thing
through only ONE cell!
Can be Eukaryotic or Prokaryotic- Eukaryotic
means they contain a nucleus inside the cell
and Prokaryotic means they do not contain a
nucleus.
Can also be heterotrophic or autotrophic
Examples- Bacteria, Amoeba, Paramecium