Essential Question How is a living thing differentiated from a non-living object?

Essential Question How are living organisms classified?

Essential Question On what different scales can life be studied?

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

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 muscle fibers, or cells

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.

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

E. Organ System Level System: Composed of several organs working together for common purpose Ex. Digestive System

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

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

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

I. The Biosphere All the ecosystems in the world combine to form the biosphere Incorporates living (biotic)and nonliving (abiotic) Grand scale

Levels of Organization Non-living  Living Simple  Complex Fields of Biology

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

Starting with the Molecular Level

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?

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

Chemical vs. Physical Property Chemical PropertyChemical 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 PropertyPhysical Property - chemical composition of substance is not altered

How was the model of atomic structure developed?

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

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?