Unit 2: Cells Chapter 3: Cells, The Basic Units of Life Lesson 3.3: Organization of Life.
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Transcript of Unit 2: Cells Chapter 3: Cells, The Basic Units of Life Lesson 3.3: Organization of Life.
Unit 2: CellsChapter 3: Cells, The
Basic Units of Life
Lesson 3.3: Organization of Life
A single CELL has all the necessary items to carry out life’s activities Every living thing has at least one cell. Every living thing begins as a single cell 200 different kinds of cells in your body Each kind is specialized to do a specific
function
TISSUES: Cells working in teams
Cells are grouped together to make a tissue that has a function
A TISSUE is a group of cells that work together to perform a specific job in the body.
See page 77 figure 2
ORGANS: Teams Working Together
A group of tissues working together for a specific job is called an ORGAN
See page 78 figure 3 (note plants also have organs such as stems
and roots)
ORAN SYSTEMS: A great combination
Organs work together in groups to perform a particular job. These groups are called ORGAN SYSTEMS
See page 78 figure 3 ORGAN SYSTEMS work together to form
and ORGANISM (like You!!!)
ORGANISMS: Independent Living
Anything that can live on its own is called an ORGANISM
All organisms are made up of at least one cell If a single cell is living on its own it is called
UNICELLULAR MULTICELLULAR - you can only exist as a
group of cells and the cells can only survive as part of your body.
THE BIG PICTURE
Organisms interact with each other in many ways.
A group of organisms that are of the same kind and that live in the same area make up a POPULATION
Two or more different populations living in the same area make up a COMMUNITY
ECOSYSTEM The community and all of the nonliving things
that affect it, such as: Water Soil Rocks Temperature Light
All Make up an ECOSYSTEM
TERRESTRIAL: Ecosystems on land (ex. forests, desert, prairies, your backyard…)
AQUATIC: Ecosystems in water (rivers, ponds, lakes, oceans, aquariums…)
.