standard: s7l2c. explain that cells are organized into tissues, tissues into organs, organs into...
TRANSCRIPT
Standard: S7L2c. Explain that cells are organized into tissues, tissues into organs,
organs into systems, and systems into organisms.
How do cells, tissues, organs, and organ systems explain the complexity of
living things?
EssentialQuestion:
Turn to a seat partner and discuss the
characteristics of living things.
Let’s Revie
w
Which of the following are living?
Coal
Mushroom
Grass
Fire
Gold
Bacteria
Activating Strategy:
Look at the two living organisms below. What makes organism A more
complex than organism B?
Organism A Organism B
Use the Levels of Organization Notes
Organizer to take notes [put organizer together using teacher
directions]
Organism
Organ System
Org
an
All living things are
made of cells.
http://www.neok12.com/video/Cell-Structures/zX557e437058005b55616773.htm
YouTube version [not as clear]: https://www.youtube.com/watch?v=gFuEo2ccTPA
Facts about Cells*The cell is the smallest unit of a living thing.
*Some organisms are made of a single cell [unicellular like Organism B in the previous slide]
*Some organisms are made up of many cells [multicellular like Organism A in the previous slide]
*Each cell whether part of a unicellular organism or a multicellular organism performs all the activities that characterize life.
*Multicellular organisms are more complex than unicellular organisms [the horse is a more complex organism than the paramecium]
There are different types of cells in multicellular
organisms.
Cells in a multicellular organism
are specialized. The ways in which the
cells work together and interact depend on the
organism.
Muscle Cell
Draw a simple illustration of a cell in your notes organizer.
Write Facts about Cells
Draw a simple
illustration of a Cell
A tissue is a group of similar cells that are
organized to do a specific job.
In more complex
organisms, cells
are not only specialized but
grouped together in
tissues.
Muscle Tissue
Draw a simple illustration of a tissue in
your notes organizer. Tissue
Write Facts about Tissue
Draw a simple
illustration of a Tissue
Different tissues working together to perform a
particular function represent another level of organization, the organ.
TheHear
t
Other Organs
Draw a simple illustration of an organ in your notes
organizer.
Write Facts
about anOrgan
Draw a simple
illustration of an Organ
Different organs and tissues
working together form an organ
system.
An organism may have only a few organ systems.
The Circulatory
System
Other Organ Systems
The organism itself represents the highest level
of organization.If an organism is complex, it
will consist of trillions of cells grouped into tissues, organs,
and organ systems.
If an organism is simple, it meets its needs with a body
made up of only a few types of specialized cells.
Tissue
Organ
Organ System
Organism
Levelsof
Organization
Optional Review Activities
[see resources]
*Levels of Organization Sort
*Levels of Organization Review
*Onion and Cheek Cell Lab or view microscope slides of cells
Which of the following shows
the correct representation of
the levels of organization in a
multicellular organism?
Summarizing Strategy