WALK-IN

1
WALK-IN

• Take out notebook, folder, pencil box and agenda.
• Copy this weeks agenda.

2
Reminders

• Cell Unit Test on Thursday!
• Bring in candy donations by Thursday. Write your
  name on a small slip and tape it to your item.
  Put in your periods bag.
• STUDY GUIDE FOR TEST!

3
Levels of Organization
4
Life is organized into 5 levels
Cells Tissues Organs Organ systems Organisms Popul
ations Ecosystems
5

The CELL
The cell is the basic unit of structure and
function of a living thing. Cells are specialized
by size and shape for the job they do
The amoeba above is made of only one cell and it
must perform all the jobs of the organism.
6
T I S S U E S
Tissues are made of the same type of cells
grouped together to do a specific job.
Examples 4 different types of animal tissues are
epithelial, muscle, nervous, and connective.
This pink sponge has only cells but they are not
organized into tissues. The blue Man-o-war has
tissues but no organs.
7
Organs
Organs are made up of different tissues that work
together to do a job.
Example a heart is an organ made of all four
tissues. This coral polyp is an organ and a leaf
is a plant organ.
8
Organ Systems
An organ system is a group of organs working
together.
Example Human organ systems include circulatory,
reproductive, digestive, nervous, respiratory.
Plant organ system-roots, stems, leaves
transport system.
9
Organisms
The sum of all cells, tissues, organs and organ
systems makes an organism.
10
Population
A group of the same type of organisms all living
together in the same place.
11
Ecosystem
Populations living together in one area.
12
Biosphere
All the ecosystems around the world make up the
biosphere.
13
Reading Passage

• Write your name and table , date, period .
• Fold the paper so the questions are at the back.
• We will read aloud together, then consider the
  questions together.