Concise Biology Notes (Honors Biology)

Overview of scientific principles: measurements, the scientific method, and characteristics of life.

Definition: Systematic approach to scientific study.
Steps:
- Observations: Qualitative and quantitative data.
- Hypothesis: Testable statements predicting outcomes.
- Experiments: Testing hypotheses through controlled conditions.
- Theory: Supported hypothesis by multiple experiments.
- Scientific Law: Summary of established facts.

Metric System Base Units:
- Length: $m$ (meters)
- Mass: $g$ (grams)
- Volume: $L$ (liters)
- Time: $s$ (seconds)
- Temperature: $^{ ext{o}}C$ (Celsius) or $K$ (Kelvin)
Conversions: Kilo (1000), Hecto (100), Deka (10), Base Unit, Deci (0.1), Centi (0.01), Milli (0.001), etc.

Importance: Visualizes data, showing patterns/trends.
Types of Graphs:
- Line Graphs: For dependent/independent variable relationships, often with time.
- Bar Graphs: Comparison among groups.
- Pie Charts: Percentages of a whole.

Cellular Organization: All living organisms are made of cells (unicellular or multicellular).
Energy Utilization: Metabolism; organisms take in energy.
Growth and Development: Changes over an organism's lifetime.
Reproduction: Passing genetic material; sexual or asexual.
Homeostasis: Maintaining stable internal conditions.
Response to Environment: Organisms react to stimuli.
Evolution: Gradual change in characteristics of populations.

Matter: Anything that has mass/volume.
Atoms: Composed of protons, neutrons, electrons.
Bonding Types:
- Covalent bonds: Sharing of electrons.
- Ionic bonds: Transfer of electrons between metals/nonmetals.

Properties of Water:
- Cohesion, adhesion, high specific heat, less dense as solid, universal solvent.
Acids and Bases: Defined by pH scale, dissociation of water into $H^+$ and $OH^-$ ions. Buffers help maintain pH levels.