UNICELLULAR VS MULTICELLULAR

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How are cells organized?
Cells form tissues, tissues form
organs, and organs work
together in organ systems.
cell
organ
system
tissue
organ
All of the cells, tissues, organs, and
organ systems form an organism.
Lesson
Main Idea
1 Main Idea Review
What is the main difference between the
ways unicellular and multicellular
organisms are organized?
Unicellular organisms perform functions
on their own. Multicellular organisms
have special cells, tissues, and organs to
do tasks.
Lesson
Vocabulary
1 Vocab a Review
Chlorophyll is able to use the energy in sunlight.
___________
Similar cells working together at the same function
form a ___________.
A ___________ is the smallest unit of living things
that can carry out the basic processes of life.
A group of tissues working together to perform
a specific function form an ___________.
cell
chlorophyll
organ
tissue
Lesson
Vocabulary
1 Vocab b Review
Organs that work together to perform a certain
function make up an _____________.
Multicellular organisms are made of more than
_____________
one cell.
An _____________ is a living thing.
_____________
Unicellular organisms are made of a single
cell.
multicellular
organ system
organism
unicellular
organ system (ôr´gən sis´təm) A group of organs that
work together to do a certain job.
(p. 28)
classification
kingdom
species
vertebrate
invertebrate
vascular
nonvascular
How are organisms classified?
Lesson 2 a
Kingdom
Phylum
Class
Scientists classify
organisms by sorting
them into groups
according to shared
characteristics.
Order
Family
Genus
Species
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