🎧 New: AI-Generated Podcasts Turn your study notes into engaging audio conversations. Learn more

BMV202 Medical Microbiology Quiz
10 Questions
0 Views

BMV202 Medical Microbiology Quiz

Created by
@ThumbUpAtlanta9797

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What ecosystem do humans serve for microorganisms?

An important ecosystem

What is a microbiome?

  • The sum of all microorganisms and microbial genomes that constitute a host's normal microbiota (correct)
  • A synonym for viruses
  • All types of microorganisms in a habitat
  • Only harmful bacteria in the human body
  • The microbiota is part of the host's second line of defense against harmful infectious agents.

    False

    When does the microbiota community begin developing?

    <p>At birth</p> Signup and view all the answers

    Which of the following factors can affect the development of a stable microbiome?

    <p>All of the above</p> Signup and view all the answers

    What type of bacteria predominates in breast-fed infants?

    <p>Bifidobacteria</p> Signup and view all the answers

    What happens to Bifidobacteria dominance when starting solid food?

    <p>It decreases</p> Signup and view all the answers

    The six major phyla of bacteria in the human microbiota include Actinobacteriota, Bacteroidota, Firmicutes, Fusobacteriota, Proteobacteria, and ________.

    <p>Verrucomicrobiota</p> Signup and view all the answers

    Internal organs and tissues such as the brain and blood are usually colonized by microorganisms.

    <p>False</p> Signup and view all the answers

    What can continuous skin contact with the environment lead to?

    <p>Colonization by various microbes</p> Signup and view all the answers

    Study Notes

    Microbe-Human Ecosystem

    • Humans serve as a significant ecosystem for microorganisms with an equal number of somatic and microbial cells in an average adult.
    • The microbiome encompasses all microorganisms and their genetic material, portraying its vital role in human health.
    • Normal microbial flora (microbiota) refers to the microbes typically associated with the human body.

    Holobionts and Metabolome

    • Holobionts consist of hosts and microbes co-evolving to function as a single organism.
    • The metabolome includes all small molecules produced by a cell, contributing to cellular functions.

    Microbiota Interactions

    • Interactions between human hosts and microbiota are primarily mutualistic (beneficial) or commensalistic (neutral).
    • Microbial niches vary due to factors like age, gender, diet, and nutrition, highlighting the complexity of the microbiome.

    Development of a Stable Microbiome

    • The microbiome begins developing at birth, reaching stability by age three; diverse microbiomes are linked to better health.
    • A variety of factors influence the establishment of a stable microbial community within the human body.

    Early Colonization

    • Newborns are colonized primarily through vaginal birth, which exposes them to maternal microbes; cesarean delivery results in different microbial exposure.
    • Bifidobacteria dominate the intestinal flora of breast-fed infants, aided by sugars in human milk that encourage the growth of non-pathogenic bacteria.

    Adult Human Microbiota

    • The adult microbiota is relatively stable but can change due to lifestyle and environmental factors, showing variability among individuals and different body sites.
    • Key bacterial phyla found in humans include Actinobacteriota, Bacteroidota, Firmicutes, Fusobacteriota, Proteobacteria, and Verrucomicrobiota, along with some archaea, fungi, and viruses.

    Microbial Presence by Body Site

    • Normally, internal organs (including the brain and muscles) are free from microorganisms, while the skin and mucous membranes are populated with various microbes.
    • The skin acts as a robust barrier against microbial invasion, with keratinocytes forming a dense outer layer that few microbes can penetrate.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Description

    Test your understanding of Chapter 33 of Prescott’s Microbiology, which focuses on the Microbe-Human Ecosystem. This quiz is designed for students enrolled in the BMV202 course with Dr. S. Govender during Term 3. Prepare to explore the complexities of medical microbiology through this engaging quiz.

    More Quizzes Like This

    Use Quizgecko on...
    Browser
    Browser