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Characteristics
Of Life
E7
Life Science
Beijing SMIC Private School
Characteristics of Life
What is Life?
 Let’s
say you were sent to Mars and found
something interesting, how do you know if it is
alive or dangerous?
 All
living things must move…
 All living things must eat…
 All living things must breath…
Characteristics of Life
Realm of Science
 Science
can describe the characteristics of life
but cannot explain the meaning of life.
Characteristics of Life
Characteristics of Life
 Life
is a continuum, scientists debate about
characteristics of life but here are the most
common:
1.
2.
3.
4.
5.
6.
Organization
Metabolism
Response
Homeostasis
Growth
Reproduction
Characteristics of Life
Is a Virus Alive?
 Now,
we are going to test our theory of life.
 Does a virus satisfy the following criteria?
1.
2.
3.
4.
5.
6.
Organization
Metabolism
Response
Homeostasis
Growth
Reproduction
Characteristics of Life
What is Life?
 Life
is a continuum, there are many debates
about what is life…
virus
bacteria
multi-cellular
intelligent
Characteristics of Life
Lab Safety Contract
Pay attention and follow verbal or written ____________ .
2. No ____________ , drinking or playing in the lab.
3. Do not __________ or operate things unless permitted.
4. Unauthorized or ____________ activities are prohibited.
5. Do not ____________ things or chemicals from the lab.
6. Report all __________ , injuries or spills to teacher
immediately.
7. Know how to use the ____________ eye wash.
8. Wear ____________ when instructed.
9. Keep ____________ hair or loose clothes away.
10. Read the ____________ labels twice, close caps quickly.
11. Do not return unused chemicals back to the container.
12. After class, ____________ up and throw away all trash.
1.
Characteristics of Life
Lab Instructions
Question: What characteristics must life have?
1.
2.
3.
4.
5.
6.
7.
Add an entry to your TOC
Make a new topic page (with date and page)
Go to each station and make observations
Write down the station number
Write down what do you observe
Write down what you think is happening
After you finish six stations, make a summary
Date: 9/6
Characteristics of Life
Pg 10
Station Number:
Observation:
(diagram & labels)
Interpretation:
Date: 9/6
Summary:
Characteristics of Life
Pg 11
Quiz 1
1. Science is our bridge to the __________ world.
2. Science is always __________ as new discoveries are made, old theories often need to be
improved or discarded.
3. The ____________________ is a systematic process to help validate theories that explain
natural phenomena.
4. The SI unit for mass is __________ and the unit symbol is __________ .
5. 1 g = __________ mg = __________ kg
6. 1 km = __________ m = ____________________ mm
7. Fill in the boxes with these four terms: SEM, TEM, compound microscope, stereo
microscope
Higher magnification
Lower magnification
Uses light
Can see bacteria
Uses electrons
Can see molecules
2D images
3D images