Essential Question

1
Essential Question

• How is a living thing differentiated from a
  non-living object?

2
Essential Question

• How are living organisms classified?

3
Essential Question

• On what different scales can life be studied?

4
A. Molecular Level

• Smallest Scale looks at Atoms Molecules
• Non-living aspect of cells
• Ex. DNA
• - molecule codes for life
• Molecular Biologist

5
B. Cellular Level

• Cell- smallest unit of life capable of carrying
  out all the functions of living things.
• Every single cell is alive
• Unicellular vs. Multicellular
• Cell Biologist

6
C. Tissue Level

• Tissue a group of cells that performs a specific
  function in an organism
• Ex. Skin
• All multicellular organisms have cells organized
  into tissues

Caption Skin Tissue being grown the lab. 
Source Organogensis, Inc.  
7
D. Organ Level

• Organ Several different types of tissues that
  function together for a specified purpose
• Ex. Heart? muscle, nerve, other tissues
• Ex. Leaves and roots are plant organs

8
E. Organ System Level

• System Composed of several organs working
  together for common purpose
• Ex. Digestive System

9
F. Population Level

• Population Organisms of the same species that
  live together in a particular location
• Ecologist and Ethologist
• Study interaction between population and
  environment
• Ex. Black Bear in NJ

10
G. Community Level

• Community Includes all populations of different
  organisms living in the same place
• Ex. A lawn
• Ex. A pond

11
H. Ecosystem Level

• Ecosystem Includes the community of organisms as
  well as the nonliving factors of the environment
• Ex. Forest- populations, water, climate, soil

12
I. The Biosphere

• All the ecosystems in the world combine to form
  the biosphere
• Incorporates living (biotic)and nonliving
  (abiotic)
• Grand scale

13
Levels of Organization

• Non-living ? Living
• Simple? Complex
• Fields of Biology

14
Essential Question What are the big picture
themes that unify the study of life?

• Biological Systems
• Cellular Basis for Life
• Form and Function (form fits function)
• Reproduction and Inheritance
• Interaction with Environment
• Energy and Life
• Regulation
• Adaptation and Evolution
• Biology and Society
• Scientific Inquiry

15
Starting with the

• Molecular Level

16
Is Air Matter?

• What is matter?
• How could you prove air is matter?
• Why does the balloon continue to get larger?
• Can air be classified as matter? Why?

17
Nature of Matter

• Matter defined as -
• All matter composed of _______________
• Two properties all atoms have are _____________
  and ________________
• Are these physical or chemical properties?

18
Chemical vs. Physical Property

• Chemical Property
• - process that changes the chemical composition
  of a substance
• - a new substance is produced
• - energy is released or stored
• - Processes(chemical reactions) such as
  decomposition, rusting, digestion, and burning
• Physical Property
• - chemical composition of substance is not
  altered

19
How was the model of atomic structure developed?
20
Making Predictions Based On Indirect Evidence

• Determine properties by
• - conducting tests and experiments
• - record observations and measurements
• - obtain mass if possible
• - record behavior
• - compare to knowns
• Properties indicate structure
• Create models and make predictions accurate
  predictions provide additional indirect evidence

21
What if

• What would you do to identify the liquid inside a
  completely filled, closed, opaque bottle without
  opening it?

Would if be beneficial to have an identical empty
bottle?
If you could open the bottle, what would you do
to help you identify the substance?