1. Chapter 1:
…and so it begins

2. Unifying Themes in Biology 1
Evolution: bio’s core theme; differential reproductive success
Emergent Properties: hierarchy of life
The Cell: all organism’s basic structure
Heritable Information: DNA
Structure & Function: form and function

3. Unifying Themes in Biology 2
Environmental Interaction: organisms are open systems
Regulation: feedback mechanisms
Unity & Diversity: universal genetic code
Scientific Inquiry: observation; testing; repeatability
Science, Technology & Society: functions of our world

4. Hierarchy of Organization
Molecule
Organelle
Cells
Tissues
Organ
Organism

5. Feedback Regulation: Negative
For a given process:
Accumulation of end product(s) slows the process
Example:
sugar breakdown generates ATP
excess ATP inhibits an enzyme near the beginning of the pathway

7. Feedback Regulation: Positive
An end product speeds up its production
Example:
blood clotting in response to injury
labor contractions causing more labor contractions

9. The Process of Science The Scientific Method
Hypothetico-deductive reasoning
“If….then” Logic
Provides falsifiable hypothesis for experiments
Hypothesis vs. Theory
Theory has corroborating evidence from typically many different experiments