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

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

3. 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

4. Figure 1.2 The hierarchy of biological organization

5. Figure 1.1 Biologists study life on many different scales of size and time

6. Introduction to General Biology 5., and 6. Living organisms interact with the environment: order energy utilization response to the environment reproduction growth and development homeostasis evolutionary adaptation 7.Living things are unified and diverse.

7. Figure 1.3 Some properties of life

8. Figure 1.3ax Order

9. Figure 1.3bx Reproduction

10. Introduction to General Biology 8.Evolution is the central theme of biology 9.Science involves repeated observations and testable hypotheses. 10.Science and technology are human endeavors.

11. Table 1.1 Review of Ten Unifying Themes in Biology

12. Table 1.1 Review of Ten Unifying Themes in Biology (continued)

13. Figure 1.19 Idealized version of the scientific method

14. Figure 1.20 Applying hypothetico-deductive reasoning to a campground problem

15. Figure 1.21 Controlled experiments to test the hypothesis that selective predation affects the evolution of guppy populations