1. Biology 107 General Biology Pat Akrabawi Michael Cullen Brian Ernsting Joyce Stamm

2. Introduction to General Biology As a result of this lecture and the assigned reading, you should understand the following: Properties of Life: a.order b.evolutionary adaptation c.response to the environment d.regulation/homeostasis e.energy utilization f.growth and development g.reproduction

3. Some Properties of Life

4. Examples of Order

5. Examples of Reproduction

6. Introduction to General Biology Themes in the Study of Life: 1. Cells form the simplest, independent units of organization of living organisms. Cells arise from other cells. 2.Biological information is carried in DNA. 3. Life is associated with emergent properties. These properties are the consequence of the hierarchies of structure. 4. Structure and function are correlated at all levels of biological organization.

7. Hierarchy of Biological Organization Atoms Molecules (organelles) CELLS Atoms Molecules (organelles) CELLS Organisms Organ Systems Organs Tissues Organisms Organ Systems Organs Tissues Population Community Ecosystem Biosphere Population Community Ecosystem Biosphere

8. The Hierarchy of Biological Organization

9. Biologists Study Life on Many Different Scales of Size and Time

10. Introduction to General Biology 5.Living organisms regulate their systems. 6.Organisms do not live in isolation, they interact with their environment (including other organisms) to survive. 7.All organisms transform energy to do work. 8.Living things are unified and diverse.

11. Introduction to General Biology 9.Evolution is the central theme of biology. It explains both the unity and diversity of life. 10.Science involves repeated observations and testable hypotheses. 11.Science and technology are human endeavors.

12. Review of Unifying Themes in Biology

13. Idealized Version of the Scientific Method

14. Applying Hypothetico- deductive Reasoning to a Campground Problem

15. Controlled experiments to test the hypothesis that selective predation affects the evolution of guppy populations