Page 86 - Science Course 1 (Book 1)
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Mo3-L4a: What are Unicellular and Multicellular Organisms?
Multicellular Organisms
Multicellular organisms are made of many types of
eukaryotic cells working together, each with a
specialized function.
Let’s Begin
Unicellular Organisms
Unicellular organisms carry out all life processes,
including responding to the environment, getting rid
of waste, growing, and reproducing, within one cell.
A unicellular organism made of one prokaryotic cell
is called a prokaryote.
A unicellular organism made of one eukaryotic cell
is called a eukaryote.
Key Concept
What are Unicellular and Multicellular
Organisms?
How do unicellular and multicellular differ?
prokaryotic cell eukaryotic cell
A cell without a membrane-bound nucleus is a
prokaryotic cell.
A eukaryotic cell has a membrane-bound nucleus and
many other specialized organelles.
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