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Science

Biology
Anatomy of a muscle cell Anatomy of a Neuron Ape Clarification ATP: Adenosine Triphosphate B Lymphocytes (B cells) Bacteria C-4 Photosynthesis CAM Plants Cancer Chromosomes, Chromatids, Chromatin, etc. Circulatory System and the Heart Correction to Sodium and Potassium Pump Video Cytotoxic T Cells Diffusion and Osmosis DNA Electron Transport Chain Electrotonic and Action Potentials Embryonic Stem Cells Evolution Clarification Genetics - What are genes? Genetics - What are Phenotypes? Genetics - What are SNPs? Genetics - Where do your genes come from? Glycolysis Hardy-Weinberg Principle	Helper T Cells Hemoglobin Human Prehistory Human Prehistory - Agriculture Rocks Our World Human Prehistory - Epilogue Human Prehistory - Out of (Eastern) Africa Human Prehistory - Weathering The Storm Inflammatory Response Intelligent Design and Evolution Introduction to Cellular Respiration Introduction to Evolution and Natural Selection Introduction to Heredity Krebs / Citric Acid Cycle Mitosis, Meiosis and Sexual Reproduction Myosin and Actin Natural Selection and the Owl Butterfly Neuronal Synapses (Chemical) Oxidation and Reduction in Cellular Respiration Oxidation and Reduction Review From Biological Point-of-View Oxidative Phosphorylation and Chemiosmosis Parts of a cell Phases of Meiosis Phases of Mitosis Photorespiration Photosynthesis	Photosynthesis: Calvin Cycle Photosynthesis: Light Reactions Photosynthesis: Light Reactions and Photophosphorylation Professional Antigen Presenting Cells (APC) and MHC II complexes Punnett Square Fun Red blood cells Review of B cells, CD4+ T cells and CD8+ T cells Role of Phagocytes in Innate or Nonspecific Immunity Role of the Sarcoplasmic Reticulum in Muscle Cells Saltatory Conduction in Neurons Secondary Active Transport in the Nephron Sex-Linked Traits Sodium Potassium Pump Species Taxonomy and the Tree of Life The Kidney and Nephron The Lungs and Pulmonary System Tropomyosin and troponin and their role in regulating muscle contraction Types of immune responses: Innate and Adaptive. Humoral vs. Cell-Mediated Variation in a Species Viruses Suggest topic Biology Inserta este menú en tu sitio

Chemistry
A look at a seductive but wrong Gibbs/Spontaneity Proof Acid Base Introduction Acid Base Titration Another mass composition problem Another Stoichiometry Example in a Solution Balancing Chemical Equations Boiling Point Elevation and Freezing Point Supression Buffers and Hendersen-Hasselbalch Carnot Cycle and Carnot Engine Carnot Efficiency - Proving that it is the most efficient Carnot Efficiency - Reversing the Cycle Change of State Chilling Water Problem Conjugate Acids and Bases Covalent Networks, Metallic, and Ionic Crystals Efficiency of a Carnot Engine Electron Configurations Elements and Atoms Empirical and Molecular Formulas from Stoichiometry Enthalpy Entropy Intuition Example of Finding Reactant Empirical Formula Exponential Decay Exponential Decay Formula Proof First Law of Thermodynamics/ Internal Energy Formula from Mass Composition Galvanic Cells Gibbs Free Energy and Spontaneity Groups of the Periodic Table Half Equivalence Point Half-Life Heat of Formation Hess's Law	Hess's Law and Reaction Enthalpy Change Heterogenous Equilibrium Hydrogen Peroxide Correction Ideal Gas Equation Ideal Gas Equation: PV=nRT Introduction to Exponential Decay Introduction to Kinetics Introduction to Oxidation States Introduction to pH, pOH, and pKw Introduction to the atom Ionic, Covalent, and Metallic Bonds Keq derivation intuition (can skip; bit mathy) Keq Intuition (mathy and not necessary to progress) Le Chatelier's Principle Limiting Reactant Macrostates and Microstates Maxwell's Demon Mini-Video on Ion Size Molecular and Empirical Formulas Molecular and Empirical Forumlas from Percent Composition More on Entropy More on Internal Energy More on orbitals and electron configuration More on Oxidation States More rigorous Gibbs Free Energy/ Spontaneity Relationship Orbitals Other Periodic Table Trends Partial Pressure Periodic Table Trends: Ionization Energy pH of a Weak Acid pH of a Weak Base pH, pOH of Strong Acids and Bases Phase Diagrams	pKa and pKb Relationship Proof: U=(3/2)PV or U=(3/2)nRT PV-diagrams and Expansion Work Quasistatic and Reversible Processes Reactions in Equilibrium Reconciling Thermodynamic and State Definitions of Entropy Redox Reactions S (or Entropy) is a valid state variable Solubility Specific Heat, Heat of Fusion and Vaporization Spectrophotometry States of Matter States of Matter Follow-Up Stoichiometry Stoichiometry of a Reaction in Solution Stoichiometry: Limiting Reagent Strong Acid Titration Suspensions, Colloids and Solutions The Mole and Avogadro's Number Thermodynamic Entropy Definition Clarification Titration Roundup Types of Decay Valence Electrons Van Der Waals Forces Vapor Pressure Volume Ratios in a Carnot Cycle Weak Acid Titration Work Done by Isothermic Process Work from Expansion Suggest topic Chemistry Inserta este menú en tu sitio

Cosmology and Astronomy
A Universe Smaller than the Observable Apsidal Precession (Perihelion Precession) and Milankovitch Cycles Are Southern Hemisphere Seasons More Severe? Becoming a Red Giant Beginnings of Life Big Bang Biodiversity Flourishes in Phanerozoic Eon Birth of Stars Black Holes Calendar Notation Carbon 14 Dating Cepheid Variables Chronometric Revolution Collective Learning Compositional and Mechanical Layers of the Earth Cosmic Background Radiation Cosmological Time Scale Detectable Civilizations in our Galaxy Development of Agriculture and Writing Earth Formation Energy Inputs for Tilling a Hectare of Land Firestick Farming First living things on land clarification Four Fundamental Forces Galactic Collisions Hawaiian Islands Formation	How Earths Tilt Causes Seasons How we know about the Earths core Hubble Image of Galaxies Hubbles Law Human Evolution Overview Intergalactic Scale Introduction to Light K-Ar Dating Calculation Land Productivity Limiting Human Population Lifecycle of Massive Stars Milankovitch Cycles Precession and Obliquity Ozone Layer and Eukaryotes Show Up in the Proterozoic Eon Pangaea Parallax in Observing Stars Parsec Definition Plate Tectonics - Evidence of plate movement Plate Tectonics - Geological features of Convergent Plate Boundaries Plate Tectonics - Geological Features of Divergent Plate Boundaries Plate Tectonics-- Difference between crust and lithosphere Plates Moving Due to Convection in Mantle Potassium-Argon (K-Ar) Dating Precession Causing Perihelion to Happen Later Quasars Radius of Observable Universe Random Predictions for 2060 Red Shift	Refraction of Seismic Waves Saturn Scale of Distance to Closest Stars Scale of Earth and Sun Scale of Solar System Scale of the Galaxy Scale of the Large Scale of the Small Seasons Arent Dictated by Closeness to Sun Seismic Waves Star Field and Nebula Images Stellar Distance Using Parallax Stellar Parallax Structure of the Earth Supermassive Black Holes Supernova (Supernovae) Supernova clarification The Mohorovicic Seismic Discontinuity What Causes Precession and Other Orbital Changes White and Black Dwarfs Why Cepheids Pulsate Why Gravity Gets So Strong Near Dense Objects Why S-Waves Only Travel in Solids Suggest topic Cosmology and Astronomy Inserta este menú en tu sitio

Healthcare and Medicine
A1C Levels Adequacy of the Lateral Cervical Spine X-Ray Assessing Alignment of the Lateral Cervical Spine (neck) X-Ray Bacterial Meningitis Blood Sugar Levels Blue Cross and Blue Shield Cancerous Colon Tissue Cervical Spine Protection in Airway Management Childhood Growth Colon Dysplasia Conversation About Drug Pricing	Glucose Concentration Conversion Glucose Insulin and Diabetes Health Care Costs in US vs Europe Healthcare System Overview Heart Disease and Heart Attacks Hyperplasia in Colon Tissue Inflammation Intro to the Endocrine System Medicare Overview Normal Colon Tissue Paying Doctors	Precocious Puberty Ritual of the Bedside Exam Stenosis, ischemia and heart failure Strokes Systemic Thinking About Cancer Thrombo-emboli and Thromboembolisms Vitamin C and the Limeys Suggest topic Healthcare and Medicine Inserta este menú en tu sitio

Organic Chemistry
Acid Chloride Formation Addition of Water (Acid-Catalyzed) Mechanism Alcohols Aldehyde Aldol Reaction Amide Formation from Acyl Chloride Amides, Anhydrides, Esters and Acyl Chlorides Amine as Nucleophile in Sn2 Reaction Amine in Sn2 Amine Naming Aromatic Compounds and Huckels Rule Bromination of Benzene Cahn-Ingold-Prelog System for Naming Enantiomers Carboxlic Acid Carboxylic Acid Naming Chair and Boat Shapes for Cyclohexane Chiral Examples Chirality Cis-Trans and E-Z Naming Scheme for Alkenes Common and Systematic Naming-Iso, Sec and Tert Prefixes Comparing E2 E1 Sn2 Sn1 Reactions Cyclic ethers and epoxide naming	Double Newman Diagram for Methcyclohexane E1 Reactions E2 E1 Sn2 Sn1 Reactions Example E2 Reactions Electrophilic Aromatic Substitution Entgegen-Zusammen Naming Scheme for Alkenes Examples Ether Naming Fisher Esterification Free Radical Reactions Friedel Crafts Acylation Keto Enol Tautomerization Ketone Naming Markovnikovs Rule and Carbocations Naming Alkanes with Alkyl Groups Naming Alkenes Examples Naming Alkyl Halides Naming Benzene Derivatives Naming Simple Alkanes Newman Projections Nucleophilicity (Nucleophile Strength) Nucleophilicity vs. Basicity Organic Chemistry Naming Examples	Pi bonds and sp2 Hybridized Orbitals Polymerization of Alkenes with Acid R,S (Cahn-Ingold-Prelog) Naming System Example Reaction Mechanisms Relative Stability of Amides Esters Anhydrides and Acyl Chlorides Representing Structures of Organic Molecules Resonance Ring-opening Sn2 reaction of expoxides Sn1 Amine Reaction Sn1 and Sn2 epoxide opening discussion Sn1 Reactions Sn2 Reactions Sn2 Stereochemistry Solvent Effects on Sn1 and Sn2 Reactions sp3 Hybridized Orbitals and Sigma Bonds Stereoisomers, Enantiomers, Diastereomers, Constitutional Isomers and Meso Compounds Steric Hindrance Zaitsevs Rule Suggest topic Organic Chemistry Inserta este menú en tu sitio

Physics
2-dimensional momentum problem Acceleration Acceleration Due to Gravity at the Space Station Acceleration of Aircraft Carrier Takeoff Airbus A380 Take-off Distance Airbus A380 Take-off Time Amplitude, Period, Frequency and Wavelength of Periodic Waves Average Velocity for Constant Acceleration Calculating Average Velocity or Speed Calculating dot and cross products with unit vector notation Calculus proof of centripetal acceleration formula Capacitance Center of Mass Centripetal Force and Acceleration Intuition Circuits Clearing the Green Monster at Fenway Concave Lenses Conservation of angular momemtum Conservation of Energy Convex Lens Examples Convex Lenses Convex Parabolic Mirrors Correction to Force of Friction Keeping the Block Stationary Correction to Total Final Velocity for Projectile Cross product Cross Product and Torque Deriving Displacement as a Function of Time, Acceleration and Initial Velocity Deriving Max Projectile Displacement Given Time Different Way to Determine Time in Air Displacement from Time and Velocity Example Doppler effect formula for observed frequency Doppler effect formula when source is moving away Dot vs. Cross Product Electric Potential Energy Electrostatics Fluids Force of Friction Keeping the Block Stationary Force of Friction Keeping Velocity Constant Gravitation Gravity for Astronauts in Orbit Green Monster at Fenway Part 2	Harmonic Motion Ice Accelerating Down an Incline Impact Velocity From Given Height Inclined Plane Force Components Intro to springs and Hooke's Law Introduction to Gravity Introduction to Harmonic Motion Introduction to Magnetism Introduction to mechanical advantage Introduction to Momentum Introduction to Newton's Law of Gravitation Introduction to Tension Introduction to the Doppler Effect Introduction to Torque Introduction to Vectors and Scalars Introduction to Waves Introduction to work and energy Intuition on Static and Kinetic Friction Comparisons Launching and Landing on Different Elevations Loop De Loop Answer Loop De Loop Question Mach Numbers Magnetism Magnetism: Electric Motors Magnetism: Induced Current in a Wire Magnetism: Magnetic field due to current Mass and Weight Clarification Mechanical Advantage Moments Momentum: Ice skater throws a ball Moving pulley problem Newton's First Law of Motion Newton's Second Law of Motion Newton's Third Law of Motion Normal Force and Contact Force Normal Force in an Elevator Object Image and Focal Distance Relationship (Proof of Formula) Object Image Height and Distance Relationship Optimal angle for a projectile Optimal angle for a projectile - Finding the optimal angle and distance with a bit of calculus Optimal angle for a projectile - Hangtime Optimal angle for a projectile - Horizontal distance as a function of angle (and speed)	Parabolic Mirrors Parabolic Mirrors and Real Images Plotting Projectile Displacement, Acceleration, and Velocity Potential energy stored in a spring Projectile at an Angle Projectile Height Given Time Projectile motion Projectile Motion with Ordered Set Notation Projectile Motion with Unit Vectors Projectile on an Incline Proof: Field from infinite plate Race Cars with Constant Speed Around Curve Refraction and Snell's Law Refraction in Water Relationship between angular velocity and speed Snell's Law Solving for Time Space Station Speed in Orbit Specular and Diffuse Reflection Spring potential energy example (mistake in math) Static and Kinetic Friction Example Tension Tension in an accelerating system and pie in the face The dot product Thermodynamics Total Displacement for Projectile Total Final Velocity for Projectile Total Internal Reflection Unit Vector Notation Unit Vectors and Engineering Notation Viewing g as the value of Earth's Gravitational Field N Virtual Image Visual Understanding of Centripetal Acceleration Formula Visualizing Vectors in 2 Dimensions Voltage When the source and the wave move at the same velocity Why Distance is Area under Velocity-Time Line Work and Energy Work/Energy problem with Friction Would a Brick or Feather Fall Faster Suggest topic Physics Inserta este menú en tu sitio