Download Unit 1: Chapter 2 (10)

Unit 1: Chapter 2: Lesson 10
Multicellular Organisms
Multicellular organisms could not exist if they
were only made of one kind of cell.
Why?
Because there is no way for every cell to take in food
and oxygen and get rid of wastes without starving
most cells of oxygen and food, and polluting most
cells with wastes.
Multicellular organisms organize specialized cells
into tissues (ex. muscle), organs (ex. heart) and
Organ Systems (ex. Circulatory System).
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Read Together
Questions 1-3 – Together
Question 3 – IMPORTANT
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Challenge:
Word list: Circulatory System
brain
stomach
membrane
(1) a vacuole is to a unicellular organism as a
____________ is to a multi cellular
organism.
(2) a nucleus is to a unicellular organism as a
____________
is to a multi cellular organism.
(3) the endoplasmic reticulum is to a unicellular
organism as a __________________ is to a
multi cellular organism.
(4) skin is to a multi cellular organism as a
____________________is to a unicellular
organism.
Homework – “Advantages of Being Multicellular”
Study Notes
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