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Essential Concepts in Biology: Cells, Chemistry, Biomolecules, and Cellular Processes

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Scientific Method

  • Scientific Method Example 1
    01:35
  • Basic Theories of Biology
    03:03
  • Scientific Method
    06:29

Central Dogma

  • Central Dogma
    05:45

Atoms - Smallest Unit of Matter

  • Atoms- Smallest Unit of Matter Example 1
    02:13
  • Atoms- Smallest Unit of Matter Example 3
    03:51
  • Electron Orbitals & Energy Shells
    09:44

Isotopes

  • Isotopes
    06:50
  • Radioactive Isotopes
    02:37

Introduction to Chemical Bonding

  • Introduction to Chemical Bonding Example 1
    1:59
  • Intramolecular vs. Intermolecular Bonds
    03:53
  • Map of the Lesson on Chemical Bonding
    02:42

Covalent Bonds

  • Covalent Bonds
    04:28
  • Polar Covalent Bonds
    06:59
  • Nonpolar Covalent Bonds
    06:41

Ionic Bonding

  • Ions: Anions vs. Cations
    04:34
  • Ionic Bonds
    06:07

Hydrogen Bonding

  • Hydrogen Bonding
    05:03

Introduction to Water

  • Introduction to Water
    01:54
  • Introduction to Water Example 1
    01:51
  • Emergent Properties of Water
    01:29

Properties of Water- Cohesion and Adhesion

  • Properties of Water- Cohesion and Adhesion Example 1
    01:46
  • Properties of Water- Cohesion and Adhesion
    04:16

Functional Groups

  • Functional Groups Example 1
    02:00
  • Functional Groups
    06:04

Proteins

  • Protein Structure
    08:02
  • Amino Acids
    04:37
  • Proteins
    02:50

Carbohydrates

  • Formation & Breakdown of Polysaccharides
    03:08
  • Carbohydrates
    04:53
  • Carbohydrate Functions
    05:08

Lipids

  • Steroids & Waxes
    03:30
  • Lipids
    04:19
  • Fatty Acids
    06:59

Biological Membranes

  • Biological Membranes Example 1
    02:21
  • Biological Membranes
    06:04

Types of Membrane Proteins

  • Membrane Protein Functions
    03:54
  • Types of Membrane Proteins
    02:35

Concentration Gradients and Diffusion

  • Diffusion
    02:44
  • Concentration Gradients and Diffusion
    04:51

Introduction to Membrane Transport

  • Map of the Lesson on Membrane Transport
    02:33
  • Introduction to Membrane Transport
    02:47
  • Which Molecules Freely Cross Membranes?
    07:10

Passive vs. Active Transport

  • Classes of Membrane Transport Proteins
    03:28
  • Passive vs. Active Transport
    04:18

Osmosis

  • Osmosis Example 1
    02:18
  • Osmosis
    05:59
  • Direction of Osmosis
    06:48

Prokaryotic & Eukaryotic Cells

  • Recap: Prokaryotic vs. Eukaryotic Cells
    04:26
  • Prokaryotic & Eukaryotic Cells
    05:54
  • Features of Bacterial Cells
    03:54

Introduction to Eukaryotic Organelles

  • Introduction to Eukaryotic Organelles
    03:45
  • Ribosomes
    06:51
  • Map of the Lesson on Eukaryotic Organelles
    02:43

Introduction to the Cytoskeleton

  • Cilia & Flagella
    03:15
  • Introduction to the Cytoskeleton
    06:05

Introduction to Energy

  • Thermodynamics: System vs. Surroundings
    04:21
  • Introduction to Energy
    04:58

Redox Reactions

  • Redox Reactions Example 1
    01:44
  • Electron Carriers: NADH & FADH2
    05:22
  • Redox Reactions
    04:47

Introduction to Aerobic Cellular Respiration

  • Introduction to Cellular Respiration Example 2
    01:53
  • Aerobic Cellular Respiration is a Redox Reaction
    04:18
  • Stages of Aerobic Cellular Respiration
    02:31

Glycolysis

  • Phases of Glycolysis
    06:20
  • Glycolysis Example 1
    01:29
  • Remembering Phases of Glycolysis
    02:49

Electron Transport Chain

  • Remembering the ETC
    04:43
  • Electron Transport Chain
    07:41

Fermentation & Anaerobic Respiration

  • Lactic Acid Fermentation
    03:34
  • What Happens to Aerobic Organisms if There's No Oxygen?
    07:51
  • Alcohol Fermentation
    02:02

Introduction to Photosynthesis

  • Introduction to Photosynthesis
    03:32
  • Photosynthesis vs. Cellular Respiration
    07:55
  • Photosynthesis is a Redox Reaction
    03:20

Pigments of Photosynthesis

  • Pigments of Photosynthesis
    05:58
  • Introduction to Photosystems
    04:59
  • Absorption Spectrum of Photosynthesis
    02:52

Light Reactions of Photosynthesis

  • Light Reactions of Photosynthesis Example 1
    01:48
  • Light Reactions of Photosynthesis
    04:06
  • Steps of the Light Reactions
    15:15

Calvin Cycle

  • 3 Phases of the Calvin Cycle (C3 Pathway)
    10:58
  • Calvin Cycle
    03:42

Introduction to Cell Division

  • Asexual vs. Sexual Reproduction
    04:45
  • Introduction to Cell Division
    09:40
  • Importance of Cell Division
    03:19

Introduction to the Cell Cycle

  • Introduction to the Cell Cycle
    04:46

Phases of Mitosis

  • Phases of Mitosis
    03:21
  • Metaphase
    01:58
  • Prometaphase
    03:20

Cytokinesis

  • Animal Cell Cytokinesis
    02:56
  • Cytokinesis
    01:25
  • Cytokinesis Example 1
    01:59

Introduction to Meiosis

  • Introduction to Meiosis Example 1
    01:43
  • Meiosis I & Meiosis II
    04:49
  • Introduction to Meiosis
    04:33

Meiosis I

  • Meiosis I
    07:55

Meiosis II

  • Meiosis II
    06:17