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Host–Microbe Interactions and Pathogenesis: Microbiology Study Guide

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Symbiotic Relationships

  • Symbiotic Relationships
    05:59

The Human Microbiome

  • The Human Microbiome
    03:25
  • Microbiome Promotes Immune Tolerance
    05:48
  • Microbiome Makes Nutrients & Aids in Host Digestion
    03:26

Biofilms

  • Quorum Sensing
    04:13
  • Steps of Biofilm Development
    04:32
  • Biofilms
    03:14

Introduction to Bacterial Cell Walls

  • Peptidoglycan
    01:58
  • Types of Bacterial Cell Walls
    02:44
  • Peptidoglycan Structure
    04:44

Gram-Positive vs. Gram-Negative Cell Walls

  • Mnemonic for Gram-Positive vs. Gram-Negative Cell Walls
    01:41
  • Gram-Positive vs. Gram-Negative Cell Walls
    04:46

Introduction to Cultivating Microbial Growth

  • Map of Techniques for Cultivating Microbes
    02:05
  • Introduction to Cultivating Microbial Growth
    03:49

Introduction to Controlling Microbial Growth

  • Terminology of Microbial Growth Control
    07:36
  • Hierarchy of Microbial Growth Control Terminology
    03:09
  • Situations Warranting Different Levels of Microbial Growth Control
    05:58

Selecting a Method to Control Microbial Growth

  • Types of Microbes (Microbial Characteristics)
    07:24
  • Overall Risk of Infection
    04:52
  • Environmental Factors
    04:18

Physical Methods to Control Microbial Growth

  • Dry Heat
    02:58
  • Irradiation
    06:18
  • Filtration
    04:29

Introduction to Metabolism

  • Introduction to Metabolism
    02:17
  • Catabolic & Anabolic Pathways
    03:25

Introduction to Viruses

  • General Structure of Viruses
    04:47
  • Three Common Shapes of Viruses
    03:19
  • Enveloped vs. Non-Enveloped Viruses
    05:09

Characteristics of Infectious Disease

  • Primary vs. Secondary Infections
    04:16
  • Communicable vs. Noncommunicable Diseases
    04:57
  • Intro to Characteristics of Infectious Disease
    05:09

Disease Transmission

  • Disease Transmission
    01:24
  • Vertical vs. Horizontal Disease Transmission
    02:32

Introduction to Epidemiology

  • Introduction to Epidemiology Example 1
    01:48
  • Introduction to Epidemiology Example 2
    05:15
  • Mortality & Case-Fatality Rates
    02:28

Bacterial Pathogenesis

  • Intro to Bacterial Pathogenesis
    02:35
  • 1) Exposure to Pathogen
    03:27
  • 3) Invasion into Host Tissues
    05:38

Introduction to Pathogenic Toxins

  • Introduction to Pathogenic Toxins
    03:40

Exotoxins Cause Damage to the Host

  • 1) A-B Toxins
    04:44
  • Types of Exotoxins
    03:30
  • 3) Superantigens
    03:59

Endotoxin Causes Damage to the Host

  • Endotoxin
    02:46
  • Lipid A Causes Septic Shock
    03:24

Exotoxins vs. Endotoxin Review

  • Exotoxins vs. Endotoxin Review
    07:22

Introduction to Avoiding Host Defense Mechanisms

  • Introduction to Avoiding Host Defense Mechanisms
    01:59

1) Hide Within Host Cells

  • Hide Within Host Cells
    01:50

2) Avoiding Phagocytosis

  • Pathogen Use Capsules & M Proteins to Avoid Opsonization
    05:25
  • Pathogens Avoid Encounter with Phagocytes
    05:13
  • Pathogens Use Fc Receptors to Prevent Opsonization
    03:48

3) Surviving Inside Phagocytic Cells

  • Surviving Inside Phagocytic Cells
    04:18

Introduction to Immunity

  • Innate vs. Adaptive Immunity
    05:52
  • Antigens & Antibodies
    02:58

Introduction to Innate Immunity

  • Introduction to Innate Immunity
    02:30
  • Map of Lesson on Innate Immunity
    06:42

Introduction to First-Line Defenses

  • Introduction to First-Line Defenses
    01:56
  • Map of the Lesson on First-Line Defenses
    01:37

Introduction to Cells of the Immune System

  • Introduction to Cells of the Immune System
    03:27
  • Map of the Lesson on Cells of the Immune System
    06:08
  • Hematopoiesis
    02:33

Phagoctytosis

  • Steps of Phagocytosis
    08:57
  • Phagoctytosis
    02:19

Introduction to the Complement System

  • Map of the Lesson on the Complement System
    03:25
  • Introduction to the Complement System
    04:25
  • Proteins of the Complement System
    04:16

Introduction to Inflammation

  • Types of Inflammatory Responses
    02:52
  • Introduction to Inflammation
    01:38
  • Chronic Inflammation
    03:09

Fever

  • Fever
    03:57

Introduction to Adaptive Immunity

  • Overview of Adaptive Immunity
    04:57
  • Primary vs. Secondary Lymphoid Organs
    04:58
  • Introduction to Adaptive Immunity
    05:47

Antigens

  • Free Antigens vs. Presented Antigens on APCs
    04:11
  • Antigens
    03:59

Introduction to T Lymphocytes

  • Cytotoxic T Cells vs. Helper T Cells
    05:58
  • T-Cell Receptors
    05:18
  • Naive T Cells Become Effector & Memory T Cells
    07:56

Activation of T Lymphocytes

  • Activation of T Lymphocytes
    07:33
  • Comic Strip for T Cell Activation
    03:29

Functions of T Lymphocytes

  • Functions of Helper T Cells (TH):Activation of Macrophages
    05:18
  • Types of Helper T Cells (TH)
    03:19
  • Functions of Cytotoxic T Cells (Tc)
    06:21

Review of Cytotoxic vs Helper T Cells

  • Review of Cytotoxic vs Helper T Cells
    04:27
  • Comic Strip for T Cell Functions
    02:58

Major Histocompatibility Complex Molecules

  • Classes of MHC Molecules
    07:17
  • Major Histocompatibility Complex Molecules
    02:31

Introduction to B Lymphocytes

  • B cell Receptors
    04:37
  • Naive B cells Become Effector (Plasma) Cells & Memory Cells
    04:23
  • Introduction to B Lymphocytes
    03:55

Antibodies

  • Antibody Structure
    05:40
  • Antibody Diversity
    02:34
  • Antibodies
    00:48

Classes of Antibodies

  • IgE
    02:45
  • IgA
    02:44
  • Classes of Antibodies
    04:43

Outcomes of Antibody Binding to Antigen

  • Outcomes of Antibody Binding to Antigen
    09:16

Clonal Selection

  • Clonal Selection
    06:43

Primary and Secondary Response of Adaptive Immunity

  • Primary and Secondary Response of Adaptive Immunity
    06:59

Review of Adaptive Immunity

  • Review of Adaptive Immunity
    09:20

Introduction to Microbial Genetics

  • Map of the Lesson on Microbial Genetics
    02:04
  • Introduction to Microbial Genetics
    04:20

Horizontal Gene Transfer

  • Fates of Horizontally Transferred DNA
    03:13
  • Horizontal Gene Transfer
    04:42
  • Integration of DNA via Homologous Recombination
    02:52

Bacterial Transformation

  • Bacterial Transformation
    03:06
  • Mechanism of Natural Transformation
    03:49

Introduction to Conjugation

  • Introduction to Conjugation
    04:21

Conjugation: F Plasmids

  • F Plasmids
    05:57
  • Mechanism of F Plasmid Conjugation in E. coli
    04:12

Conjugation: Hfr & F' Cells

  • F’ Cell Conjugation
    04:31
  • Hfr Cell Conjugation
    09:41

The Griffith Experiment

  • The Griffith Experiment
    08:56

Transduction

  • Generalized Transduction
    04:24
  • Transduction
    06:49
  • Specialized Transduction
    06:34