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Comprehensive Study Guide: Core Concepts in College Biology (Bio 104)

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Genes & Alleles

  • Genes & Alleles Example 1
    02:09
  • Genes & Alleles
    05:02
  • Haploid vs. Diploid Cells
    04:14

Homologous Chromosomes

  • Homologous Chromosomes
    08:09

Introduction to Meiosis

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

Genotype vs. Phenotype

  • Genotype & Phenotype
    06:36
  • Dominant vs. Recessive Alleles
    03:39

Punnett Squares

  • How to Use Punnett Squares
    07:05
  • Punnett Squares
    01:37

Incomplete Dominance vs. Codominance

  • Codominance
    02:59
  • Codominance & Blood Type
    05:15
  • Incomplete Dominance
    03:09

Sex-Linked Inheritance

  • X-Linked Recessive Pedigrees
    03:42
  • Sex-Linked Inheritance
    04:17
  • X-Linked Recessive Disorder: Hemophilia Inheritance
    04:37

Genetic Variation

  • Sources of Genetic Variation
    02:16
  • Sexual Reproduction and Recombination
    05:08
  • Mutations
    06:42

Introduction to DNA Replication

  • Unwinding the DNA: Topoisomerase, Helicase & SSBs
    05:10
  • Components of DNA Replication
    04:47
  • Origin of Replication
    03:33

DNA Polymerases

  • DNA Polymerase Requirements
    05:03
  • DNA Polymerases
    04:01

Leading & Lagging DNA Strands

  • Leading & Lagging DNA Strands
    05:15

Central Dogma

  • Central Dogma
    05:45

Introduction to Transcription

  • Overview of Transcription
    07:44
  • Introduction to Transcription
    05:51

Steps of Transcription

  • 3) Termination of Transcription
    02:44
  • 1) Initiation of Transcription
    04:16
  • 2) Elongation of Transcription
    04:01

Introduction to Types of RNA

  • Introduction to Types of RNA
    07:20

Genetic Code

  • How to Use the Genetic Code
    11:39
  • Genetic Code
    01:28

Introduction to Translation

  • Ribosomal tRNA Binding Sites
    06:16
  • Ribosome Subunits
    08:42
  • Introduction to Translation
    06:12

Steps of Translation

  • 2) Elongation of Translation
    04:59
  • 3) Termination of Translation
    02:16
  • 1) Initiation of Translation
    05:03

Mutations

  • Mutations
    02:29
  • Types of Mutations
    08:44

Introduction to Evolution and Natural Selection

  • Introduction to Evolution and Natual Selection Example 1
    03:22
  • Introduction to Evolution and Natual Selection Example 2
    04:28
  • Typological vs. Population Thinking
    03:56

Natural Selection

  • Natural Selection Example 2
    05:11
  • Natural Selection: Observations and Inferences
    04:12
  • Natural Selection Example 1
    02:19

The Biological Species Concept

  • The Biological Species Concept Example 3
    02:15
  • Prezygotic Barriers
    05:18
  • The Biological Species Concept Example 1
    01:27

Allopatric and Sympatric Speciation

  • Allopatric and Sympatric Speciation
    02:46
  • Allopatric and Sympatric Speciation Example 1
    04:25
  • Allopatric Speciation
    03:53

Introduction to Phylogeny

  • Binomial Nomenclature
    02:32
  • Systematics
    06:57
  • Introduction to Phylogeny Example 1
    01:31

Phylogeny

  • Phylogeny Example 3
    04:12
  • Parts of a Phylogenetic Tree
    05:16
  • Phylogeny Example 1
    06:11

Building Phylogenetic Trees

  • Shared Derived Characters
    05:42
  • Parsimony
    06:46
  • Building Phylogenetic Trees Example 1
    04:35

Cladistics

  • Cladistics Example 1
    03:52
  • Monophyletic, Paraphyletic, & Polyphyletic Group
    06:37

Prokaryotic & Eukaryotic Cells

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

Endosymbiotic Theory

  • Endosymbiotic Theory
    06:58

Introduction to Photosynthesis

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

Stages of Photosynthesis

  • Stages of Photosynthesis
    03:16
  • Map of the Lesson on Photosynthesis
    02:41

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

Review of Photosynthesis

  • Recap Map of Photosynthesis
    08:50
  • Review of Photosynthesis Example 1
    02:06

Roots and Shoots

  • Phenotypic Plasticity
    06:58
  • Plant Cells Review
    05:29
  • Shoots and Leaves
    05:46

Tissues

  • Epidermal and Ground Tissue
    05:39
  • Ground Tissue Cells
    04:03
  • Vascular Tissue
    06:58

Water Potential

  • How Water Enters Xylem
    07:59
  • Cohesion-Tension Theory
    05:59
  • Water Potential
    11:32

Soil and Nutrients

  • Ion Exclusion
    04:51
  • Soil Nutrients
    03:25
  • Cation Exchange
    06:26

Introduction to Ecology

  • Levels of Ecological Study
    05:01
  • Introduction to Ecology Example 1
    02:31
  • Environment vs. Habitat vs. Niche
    01:57

Introduction to Terrestrial Biomes

  • Introduction to Terrestrial Biomes Example 2
    01:29
  • Introduction to Terrestrial Biomes
    01:55
  • Introduction to Terrestrial Biomes Example 1
    00:49

Terrestrial Biomes: Near Equator

  • Terrestrial Biomes: Near Equator Example 1
    03:03
  • Savannas (Tropical Grasslands)
    01:02
  • Tropical Rainforests
    01:22

Terrestrial Biomes: Temperate Regions

  • Temperate Grasslands (Prairie/Steppe)
    00:51
  • Terrestrial Biomes: Temperate Regions Example 1
    01:59
  • Temperate Broadleaf/Deciduous Forests
    01:00

Terrestrial Biomes: Northern Regions

  • Tundras
    00:58
  • Terrestrial Biomes: Northern Regions Example 1
    05:07
  • Northern Coniferous Forests (Boreal Forests/Taiga)
    01:03

Introduction to Population Ecology

  • Factors Affecting Population Size (N)
    01:48
  • Population Size & Density
    01:52
  • Introduction to Population Ecology Example 3
    01:51

Population Demography

  • Life Tables
    03:49
  • Population Demography Example 1
    02:18
  • Survivorship Curves
    02:54

Introduction to Population Growth Models

  • Introduction to Population Growth Models Example 3
    02:52
  • Introduction to Population Growth Models
    01:09
  • Assumptions of Population Growth Models
    03:29

Exponential Population Growth

  • Exponential Population Growth Example 2
    07:34
  • Exponential Population Growth
    03:05
  • Exponential Population Growth Equations
    06:35

Logistic Population Growth

  • Summary of Key Features & Assumptions for Each Population Growth Model
    07:28
  • Logistic Growth in a Limited Environment
    05:00
  • Logistic Population Growth Example 1
    04:28

Introduction to Community Ecology

  • Introduction to Community Ecology
    02:03

Introduction to Community Interactions

  • Overview: Types of Community Interactions
    02:55
  • Introduction to Community Interactions Example 1
    02:23
  • Introduction to Community Interactions
    01:57

Community Interactions: Competition (-/-)

  • Resource Partitioning (Partial Niche Overlap)
    03:57
  • Competitive Exclusion Principle (Complete Niche Overlap)
    04:23
  • Community Interactions: Competition (-/-) Example 1
    04:23

Community Interactions: Exploitation (+/-)

  • 1) Exploitation (+/-): Predation
    01:42
  • 3) Exploitation (+/-): Parasitism
    02:37
  • Community Interactions: Exploitation (+/–)
    00:49

Community Interactions: Mutualism (+/+) & Commensalism (+/0)

  • Positive Interactions
    02:56
  • Summary of Community Interactions
    01:52

Community Structure

  • Community Structure Example 3
    02:22
  • Community Structure Example 1
    03:37
  • Community Structure
    04:25

Community Dynamics

  • Disturbances Make Communities Dynamic
    03:37
  • Secondary Ecological Succession
    02:31
  • Effects of Early-Arriving Species on Late-Arriving Species
    01:34

Introduction to Ecosystems

  • Grazing & Detritus-Based Food Chains
    03:29
  • Introduction to Ecosystems Example 2
    01:57
  • Introduction to Ecosystems
    04:07

Energy Flow Through Ecosystems

  • Gross Productive Energy vs. Assimilated Energy
    05:28
  • Energy Efficiency in Ecosystems
    06:28
  • Energy Flow Through Ecosystems Example 2
    07:07

Biogeochemical Cycles

  • Biogeochemical Cycles Example 2
    02:40
  • Carbon Cycle
    04:20
  • Nitrogen Cycle
    08:32