1. By
Carla Bridges

2. Why can’t you use your arm muscles to digest
food?

3. You Are!!!!!!!!!!
An organism made of many cells.
Made by making more small cells,
not by making cells larger.
For example: Elephant vs. human

4.  Larger Size
1. Larger than single celled
organisms
2. Prey for less predators
3. Wider variety of prey

5.  Longer Life
1. Is not limited to the lifespan
of a single cell

6.  Specialization
1. Each cell has a specific
job.
2. Makes organism more
efficient

8.  Tissue-group of cells that work together to
perform a specific job.
 Material around and between the cells is also
part of the tissue.

10. Animals have four types of tissue
1. Nerve tissue
2. Muscle tissue
3. Connective tissue
4. Protective tissue

11.  Plants have three
types of tissue:
1. Transport tissue-
moves water and
nutrients through a
plant
2. Protective tissue-
covers the plant;
helps the plant
retain water,
protection
3. Ground tissue-
photosynthesis
takes place here

13.  Organ - a
structure made
up of two or more
tissues working
together to
perform a
specific function

14. Has several kinds of
tissue.
 Muscle tissue makes food move in and
through the stomach.
 Special tissues make chemicals that
help digest your food.
 Connective tissue holds the stomach
together.
 Nervous tissue carries messages back
and forth between the stomach and the
brain.

16. Larger Size
Longer Life
Cell Specialization

18. Organ - a structure made up
of two or more tissues
working together to perform a
specific function

20. A group of organs working
together to perform a
particular function is called an
organ system.
Each organ system has a
specific job to do in the body.

21. Plants have organ systems
also:
Leafsystem
Stem system
Root system

22. Digestive system
 Stomach and Intestines
1. Job is to break down food into small
particles.
2. The rest of the body depends on the
digestive system for fuel.
 The digestive system depends on the
respiratory and cardiovascular systems for
oxygen.
Cardiovascular System
 Heart and Blood Vessels

24.  Anything that can perform life processes by
itself is an organism.
2 types
 Unicellular and multicellular

25. Unicellular organisms
 Bacteria
 Protists
 Some Fungi
 Live in colonies but all of the cells
are single cells
 Each cell must carry out all life
processes to survive

26. In Contrast:
Even the simplest
multicellular organism has
specialized cells that
depend on each other for
the survival of the
organism.

28. Cell
Tissue
Organ
Organ system
Organism

30. Structure is the arrangement of parts in
an organism.
 Includes the shape of a part and the
material of which the part is made.
 Example:
 The structure of the lungs is a large
spongy sac.

31. Function is the job the part does
 Example:
 The function of the lungs is to carry oxygen to
the rest of the body.
 Connection;
 The structure of the lungs enables them to
perform a function.

32. Break into pairs
according to shoe
color

33. Holt Science and Technology. Holt, Rinehart,
and Winston. Harcourt Education Company.
Austin, Texas 2005.

34.  UCP 1: Systems, order, and organization
 UCP 2: Evidence, models, and explanation
 UCP 5: Form and function
 LS 1a: Living systems at all levels of organization
demonstrate the complementary nature of structure and
function. Important levels of organization for structure and
function include cells, organs, tissues, organ systems,
whole organisms, and ecosystems.
 LS 1b: All organisms are composed of cells—the
fundamental unit of life. Most organisms are single cells;
other organisms, including humans, are multicellular.
 LS 1d: Specialized cells perform specialized functions in
multicellular organisms. Groups of specialized cells
cooperate to form a tissue, such as a muscle. Different
tissues are in turn grouped together to form larger functional
units, called organs. Each type of cell, tissue, or organ has a
distinct structure and set of functions that serves the
organism as a whole.