Biology
About Course
Course Content
Intro to biology
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Welcome to biology!
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Biology overview
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The science of biology
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The scientific method
Chemistry of life
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Elements and atoms
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Elements and atoms
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Introduction to the atom
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Electron shells and orbitals
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Shells, subshells, and orbitals
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Valence electrons and ionic compounds
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Groups of the periodic table
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Electronegativity
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Electronegativity and bonding
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Intermolecular forces
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Chemical reactions introduction
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Chemical bonds and reactions
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Ionic bonds
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Covalent bonds
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Hydrogen bonding in water
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Hydrogen bonding in water
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Water as a solvent
Water, acids, and bases
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Cohesion and adhesion
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Capillary action and why we see a meniscus
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Surface tension
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Temperature and state changes in water
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LeBron Asks: Why does sweating cool you down?
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Evaporative cooling
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Heat of vaporization of water and ethanol
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Specific heat of water
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Liquid water denser than solid water (ice)
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Acids, bases, and pH
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Autoionization of water
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Arrhenius definition of acids and bases
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Brønsted-Lowry definition of acids and bases
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Definition of pH
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Introduction to buffers
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Carbon
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Carbon as a building block of life
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Silicon-based life
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Representing structures of organic molecules
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Hydrocarbon structures and functional groups
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Hydrocarbon overview
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Isomers
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Functional groups
Properties of carbon
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Carbohydrates
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Molecular structure of glucose
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Dehydration synthesis or a condensation reaction
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Hydrolysis
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Molecular structure of fructose
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Lipids
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Molecular structure of triglycerides (fats)
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Saturated fats, unsaturated fats, and trans fats
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Lipid overview
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Nucleic acids
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DNA
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DNA replication and RNA transcription and translation
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Molecular structure of DNA
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Antiparallel structure of DNA strands
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Molecular structure of RNA
Macromolecules
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Proteins
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Introduction to amino acids
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Peptide bond formation
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Overview of protein structure
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Tertiary structure of proteins
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Energy in metabolism
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Introduction to metabolism: Anabolism and catabolism
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Laws of thermodynamics
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Introduction to energy
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First Law of Thermodynamics introduction
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Introduction to entropy
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Second Law of Thermodynamics
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Second Law of Thermodynamics and entropy
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Why heat increases entropy
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Free energy
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Gibbs free energy and spontaneous reactions
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Endergonic, exergonic, exothermic, and endothermic
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ATP and reaction coupling
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ATP: Adenosine triphosphate
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ATP hydrolysis mechanism
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Reaction coupling to create glucose-6-phosphate
Energy and enzymes
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Introduction to enzymes
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Introduction to kinetics
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Enzymes
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Enzyme regulation
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Enzyme cofactors and coenzymes
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Competitive inhibition
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Noncompetitive inhibition
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Introduction to cells
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Scale of cells
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Cell theory
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Prokaryotic and eukaryotic cells
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Cell size
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Prokaryotic and eukaryotic cells
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Tour of a eukaryotic cell
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Endoplasmic reticulum and Golgi bodies
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Endomembrane system
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Mitochondria
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The cytoskeleton
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Extracellular structures and cell-cell junctions
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Extracellular matrix
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Plant cell walls
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Overview of animal and plant cells
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The plasma membrane
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Fluid mosaic model of cell membranes
Structure of a cell
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Diffusion and osmosis
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Diffusion – Introduction
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Concentration gradients
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Osmosis
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Hypotonic, isotonic, and hypertonic solutions (tonicity)
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Diffusion and osmosis
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Passive transport
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Passive transport and selective permeability
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Facilitated diffusion
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Active transport
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Sodium potassium pump
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Electrochemical gradients and secondary active transport
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Uniporters, symporters and antiporters
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Bulk transport
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Endocytosis, phagocytosis, and pinocytosis
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Exocytosis
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Introduction to cellular respiration
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ATP: Adenosine triphosphate
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ATP hydrolysis mechanism
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Cellular respiration introduction
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Oxidation and reduction review from biological point-of-view
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Oxidation and reduction in cellular respiration
Membranes and transport
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Steps of cellular respiration
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Overview of cellular respiration
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Glycolysis
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Overview of glycolysis
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Steps of glycolysis
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Pyruvate oxidation and the citric acid cycle
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Krebs / citric acid cycle
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Oxidative phosphorylation
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Oxidative phosphorylation and the electron transport chain
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Variations on cellular respiration
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Lactic acid fermentation
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Alcohol or ethanol fermentation
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Intro to photosynthesisIntro to photosynthesis
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ATP: Adenosine triphosphate
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ATP hydrolysis mechanism
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Photosynthesis
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Breaking down photosynthesis stages
Cellular respiration
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The light-dependent reactions
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Conceptual overview of light dependent reactions
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Light dependent reactions actors
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Photosynthesis: Overview of the light-dependent reactions
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The Calvin cycle
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Photosynthesis: Calvin cycle
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Photorespiration: C3, C4, and CAM plants
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Photorespiration
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C4 photosynthesis
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CAM plants
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How cells signal to each other
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Overview of cell signaling
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Example of a signal transduction pathway
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Communication in single-celled organisms
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Cell signaling in yeast reproduction
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Introduction to cell division
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Fertilization terminology: gametes, zygotes, haploid, diploid
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Zygote differentiating into somatic and germ cells
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Chromosomes, chromatids and chromatin
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The cell cycle and mitosis
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Interphase
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Mitosis
Photosynthesis
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Meiosis
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Comparing mitosis and meiosis
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Chromosomal crossover in meiosis I
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Phases of meiosis I
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Phases of meiosis II
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Cell cycle regulation, cancer, and stem cells
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Embryonic stem cells
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Cancer
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Apoptosis
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Mendelian genetics
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Introduction to heredity
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Worked example: Punnett squares
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Variations on Mendelian genetics
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Worked example: Punnett squares
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Chromosomal basis of genetics
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Boveri-Sutton chromosome theory
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Thomas Hunt Morgan and fruit flies
Cell signaling
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Sex linkage, chromosomal mutations, & non-nuclear inheritance
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Sex-linked traits
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Molecular basis of genetics
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DNA
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DNA replication and RNA transcription and translation
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Alleles and genes
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Structure of DNA
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DNA
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Molecular structure of DNA
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Antiparallel structure of DNA strands
Cell division
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Discovery of DNA
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DNA as the “transforming principle”
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Hershey and Chase: DNA is the genetic material
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The discovery of the double helix structure of DNA
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DNA replication
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DNA replication and RNA transcription and translation
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Leading and lagging strands in DNA replication
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Speed and precision of DNA replication
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Molecular structure of DNA
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Central dogma (DNA to RNA to protein)
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DNA replication and RNA transcription and translation
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Alleles and genes
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Transcription
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DNA replication and RNA transcription and translation
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Transcription and mRNA processing
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Molecular structure of RNA
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Translation
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DNA replication and RNA transcription and translation
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Translation (mRNA to protein)
Classical and molecular genetics
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Gene regulation in bacteria
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Operons and gene regulation in bacteria
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Trp operon
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Lac operon
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DNA cloning
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DNA cloning and recombinant DNA
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DNA analysis methods
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Polymerase chain reaction (PCR)
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Gel electrophoresis
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Stem cells
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Embryonic stem cells
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Development & differentiation
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Cellular specialization (differentiation)
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Zygote differentiating into somatic and germ cells
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Embryonic stem cells
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Apoptosis
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Apoptosis
DNA as the genetic material
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Prokaryote structure
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Bacteria
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Prokaryotic and eukaryotic cells
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Viruses
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Viruses
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Evolution and natural selection
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Introduction to evolution and natural selection
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Ape clarification
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Intelligent design and evolution
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Evolution clarification
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Natural selection and the owl butterfly
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Variation in a species
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Evidence for evolution
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Population genetics
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Allele frequency
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Hardy-Weinberg equation
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Applying the Hardy-Weinberg equation
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Discussions of conditions for Hardy-Weinberg
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Genetic drift, bottleneck effect, and founder effect
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Speciation and evolutionary trees
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Taxonomy and the tree of life
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Species
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Speciation
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Biodiversity and natural selection
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Genetic variation, gene flow, and new species
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Discovering the tree of life
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Understanding and building phylogenetic trees
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Formation of Earth and early life
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Earth formation
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Beginnings of life
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Origins of life
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The diversification of life
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Ozone layer and eukaryotes show up in the Proterozoic eon
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First living things on land clarification
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Biodiversity flourishes in Phanerozoic eon
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Human evolution overview
Gene regulation
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Radiometric dating
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Chronometric revolution
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Carbon 14 dating 1
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Carbon 14 dating 2
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Potassium-argon (K-Ar) dating
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K-Ar dating calculation
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Intro to ecology
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Ecology introduction
Biotechnology
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Intro to population ecology
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Life history strategies and fecundity
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Population growth & regulation
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Exponential and logistic growth in populations
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Population regulation
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Predator-prey cycles
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Thomas Malthus and population growth
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Intro to community ecology
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Interactions between populations
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Predator-prey cycles
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Community structure & diversity
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Ecosystems and ecological networks
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Introduced species and biodiversity
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Ecological succession
Developmental biology
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Intro to ecosystems
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Ecosystems and biomes
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Flow of energy and matter through ecosystems
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Biogeochemical cycles
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Biogeochemical cycles overview
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The water cycle
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The carbon cycle
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The nitrogen cycle
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Phosphorus cycle
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Eutrophication and dead zones
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Biogeography
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How biodiversity is distributed globally
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Why biodiversity is distributed unevenly
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New localities lead to new biodiversity
Bacteria and archaea
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Ecosystems & ecosystem services
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Ecosystems and ecological networks
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Ecosystem services
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Global distribution of biodiversity
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What is a biodiversity hotspot?
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How biodiversity is distributed globally
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Why biodiversity is distributed unevenly
Viruses
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Introduced species and biodiversity
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How does climate change affect biodiversity?
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Demystifying ocean acidification and biodiversity impacts
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Biodiversity and extinction, then and now
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Threats to biodiversity
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Human activities that threaten biodiversity
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Protecting biodiversity
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Conservation and the race to save biodiversity
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Protecting biodiversity: the power of the individual
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Protecting biodiversity: local and global policies
Evolution and the tree of life
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Levels of biodiversity
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Levels of biodiversity
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Ecosystem biodiversity
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Discovering the tree of life
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Animal behavior
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Animal communication
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Animal behavior: foraging
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Circulatory and pulmonary systems
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The lungs and pulmonary system
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Red blood cells
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Circulatory system and the heart
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Hemoglobin
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The neuron and nervous system
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Anatomy of a neuron
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Sodium-potassium pump
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Correction to sodium-potassium pump video
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Electrotonic and action potentials
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Saltatory conduction in neurons
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Neuronal synapses (chemical)
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Overview of the functions of the cerebral cortex
History of life on Earth
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The kidney and nephron
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The kidney and nephron
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Secondary active transport in the nephron
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Muscles
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Myosin and actin
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How tropomyosin and troponin regulate muscle contraction
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Role of the sarcoplasmic reticulum in muscle cells
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Anatomy of a skeletal muscle fiber
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Immunology
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Role of phagocytes in innate or nonspecific immunity
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Types of immune responses: Innate and adaptive, humoral vs. cell-mediated
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B lymphocytes (B cells)
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Professional antigen presenting cells (APC) and MHC II complexes
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Helper T cells
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Cytotoxic T cells and MHC I complexes
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Review of B cells, CD4+ T cells and CD8+ T cells
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Inflammatory response
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Plant responses to light
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Phototropism
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Photoperiodism
Ecology
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Population genetics: When Darwin met Mendel
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Taxonomy: Life’s filing system
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Evolution: It’s a Thing
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Comparative anatomy: What makes us animals
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Simple animals: Sponges, jellies, & octopuses
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Complex animals: Annelids & arthropods
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Chordates
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Animal behavior
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The nervous system
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Circulatory & respiratory systems
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The digestive system
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The excretory system: From your heart to the toilet
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The skeletal system: It’s ALIVE!
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Big Guns: The Muscular System
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Your immune system: Natural born killer
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Great glands – Your endocrine system
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The reproductive system: How gonads go
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Old & Odd: Archaea, Bacteria & Protists
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The sex lives of nonvascular plants
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Vascular plants = Winning!
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The plants & the bees: Plant reproduction
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Ecology – Rules for living on earth
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Crash Course: Biology
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Why carbon is everywhere
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Water – Liquid awesome
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Biological molecules – You are what you eat
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Eukaryopolis – The city of animal cells
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In da club – Membranes & transport
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Plant cells
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ATP & respiration
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Photosynthesis
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Heredity
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DNA, hot pockets, & the longest word ever
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Meiosis: Where the sex starts
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Natural Selection
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Speciation: Of ligers & men
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Animal development: We’re just tubes
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Evolutionary development: Chicken teeth
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Crash Course: Ecology
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The history of life on earth
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Population ecology: The Texas mosquito mystery
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Human population growth
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Community ecology: Feel the love
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Community ecology II: Predators
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Ecological succession: Change is good
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Ecosystem ecology: Links in the chain
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The hydrologic and carbon cycles: Always recycle!
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Nitrogen and phosphorus cycles: Always recycle!
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5 human impacts on the environment
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Pollution
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Conservation and restoration ecology
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