Science
"Science for College Entrance! Biology, Chemistry, Physics - the holy trinity of scientific knowledge. Let's review the essentials, beshy!"
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1. Biology Basics 🧬
Cell Structure:
- Cell membrane: Controls what enters/exits
- Nucleus: Control center, contains DNA
- Mitochondria: Powerhouse - produces ATP
- Ribosomes: Protein synthesis
- Chloroplast: Photosynthesis (plants only)
2. Chemistry Fundamentals ⚗️
Key Concepts:
- Atom: Protons (+), Neutrons (0), Electrons (-)
- Periodic Table: Groups (vertical) share similar properties
- Chemical Bonding: Ionic (transfer), Covalent (share)
- pH Scale: 0-6 Acid, 7 Neutral, 8-14 Base
3. Physics Principles 🚀
Newton's Laws:
- 1st Law (Inertia): Objects stay at rest or in motion unless acted upon
- 2nd Law: F = ma (Force = mass × acceleration)
- 3rd Law: Every action has an equal and opposite reaction
Key Formulas:
- Speed = Distance / Time
- Density = Mass / Volume
- Work = Force × Distance
4. Earth Science 🌍
- Layers: Crust, Mantle, Outer Core, Inner Core
- Plate Tectonics: Continental drift, earthquakes, volcanoes
- Water Cycle: Evaporation → Condensation → Precipitation
- Atmosphere: Troposphere (weather), Stratosphere (ozone)
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