Microbes Overview
32 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which type of microbe is known for causing diseases such as flu and HIV?

  • Fungi
  • Protozoa
  • Bacteria
  • Virus (correct)
  • Bacteria can be seen with the naked eye.

    False

    What are the three main types of microbes?

    Bacteria, viruses, fungi

    A virus is made up of a protein coating and some ______.

    <p>genetic material</p> Signup and view all the answers

    Match the following microbes with their characteristics:

    <p>Bacteria = Reproduce very quickly Virus = Can only reproduce within living organisms Fungi = Some can be seen with the naked eye</p> Signup and view all the answers

    Which characteristic is true for viruses?

    <p>They require a host to reproduce.</p> Signup and view all the answers

    Fungi are larger than bacteria in all cases.

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

    What is the size of bacteria compared to millimeters?

    <p>1/1000 mm</p> Signup and view all the answers

    What does yeast convert glucose into during anaerobic respiration?

    <p>Alcohol and carbon dioxide</p> Signup and view all the answers

    Fungi can cause diseases such as athlete’s foot and mumps.

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

    Name one disease caused by bacteria.

    <p>Food poisoning</p> Signup and view all the answers

    Microbes can enter the body through the __________.

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

    Which of the following is NOT a way microbes can enter the body?

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

    Match each type of microbe to the corresponding disease:

    <p>Bacteria = Tuberculosis (TB) Virus = Influenza (flu) Fungi = Fungal sinusitis Protozoa = HIV / AIDS</p> Signup and view all the answers

    What is produced during the aerobic respiration of yeast that causes bread to rise?

    <p>Carbon Dioxide</p> Signup and view all the answers

    Fungi are the simplest structure of all microbes.

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

    White blood cells are responsible for identifying and destroying harmful microbes.

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

    What is the role of the immune system in fighting disease?

    <p>To identify and destroy harmful microbes.</p> Signup and view all the answers

    What is Quorn™ and what is it made from?

    <p>Quorn™ is a meat substitute made from fungi.</p> Signup and view all the answers

    Yeast undergoes __________ respiration to produce alcohol during fermentation.

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

    Match the following uses of microbes to their descriptions:

    <p>Yoghurt = Milk fermentation using bacteria Bread = Rising through yeast's aerobic respiration Beer = Fermentation of sugars by yeast without oxygen Quorn = Protein made from fungi</p> Signup and view all the answers

    Which of the following is NOT a use of fungi?

    <p>Growing crops</p> Signup and view all the answers

    Bacteria can be used to make yoghurt by causing milk to 'go off'.

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

    Name one complex structure found in fungi.

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

    What is the primary function of white blood cells?

    <p>Defend against harmful microbes</p> Signup and view all the answers

    Antibiotics can treat both viral and bacterial infections.

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

    What is antibiotic resistance?

    <p>The inability of certain antibiotics to affect some types of bacteria.</p> Signup and view all the answers

    Vaccines contain dead or weakened strains of the ______ that causes the disease.

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

    Match the following immune defenses with their functions:

    <p>White blood cells = Engulf harmful microbes Antibodies = Pair with antigens to assist in destruction of microbes Antiseptics = Disinfect the skin Vaccines = Stimulate the immune system</p> Signup and view all the answers

    Which method is NOT mentioned as a way to prevent the spread of disease?

    <p>Wearing protective gear</p> Signup and view all the answers

    Antiseptics are used to disinfect surfaces only.

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

    How do vaccines protect against diseases?

    <p>They stimulate the immune system using dead or weakened microbes.</p> Signup and view all the answers

    Study Notes

    Microbes Overview

    • Microbes, or micro-organisms, are tiny living entities that cannot be seen without a microscope.
    • Types of microbes include bacteria, viruses, and fungi.

    Bacteria

    • Examples: Salmonella, Streptococcus.
    • Size: Approximately 1/1000 mm.
    • Shape: Can be spherical, rod-shaped, or comma-shaped.
    • Structure: Single-celled, with genetic material not enclosed in a nucleus.
    • Reproduction: Rapid, exponential growth; two can quickly become four, then eight.

    Viruses

    • Examples: Flu virus, HIV.
    • Size: Approximately 1/1,000,000 mm.
    • Shape: Regular and geometric forms.
    • Structure: Simple organisms with a protein coat and genetic material; do not exhibit all characteristics of life.
    • Reproduction: Require a host to grow and reproduce; adapt quickly to their environment.

    Fungi

    • Examples: Penicillium, yeast.
    • Size: Ranges from visible to slightly larger than bacterial cells.
    • Shape: Diverse forms.
    • Structure: Complex structures; feed on other living organisms.

    Uses of Microbes

    • Bacteria are used in food production; they transform milk into yogurt and help in cheese making.
    • Fungi are used to produce meat substitutes like Quorn™.
    • Yeast (a type of fungus) assists in baking through aerobic respiration, which produces carbon dioxide to make bread rise.
    • Yeast also conducts anaerobic respiration to produce alcohol during fermentation for beer and wine.

    Microbes and Disease

    • Microbes can cause various diseases, which vary in severity based on their type:
      • Bacterial diseases: Food poisoning, tuberculosis, tetanus, cholera.
      • Viral diseases: Influenza, mumps, chickenpox, HIV/AIDS.
      • Fungal diseases: Athlete’s foot, onychomycosis (discolored toenails).

    Microbe Entry and Spread

    • Microbes can enter the body through various points: eyes, ears, nose, mouth, genitals, cuts, and skin.
    • Methods of spreading diseases include direct contact, respiratory droplets, and contaminated surfaces.

    Body Defenses Against Disease

    • The immune system employs white blood cells to identify and eliminate harmful microbes by engulfing them.
    • Antibodies produced by some white blood cells recognize specific antigens on microbes, aiding in the destruction of pathogens.

    Disease Prevention Strategies

    • Preventive measures include disinfecting surfaces, using antiseptics on skin, sterilizing equipment, incorporating food preservatives, and maintaining personal hygiene.
    • Vaccination and antibiotics are effective tools in reducing disease spread.

    Antibiotics and Vaccines

    • Antibiotics: Chemicals that treat bacterial infections by killing or inhibiting bacteria; challenge from antibiotic-resistant strains.
    • Vaccines: Contain dead or weakened microbes, stimulating the immune system to provide protection against diseases like measles.

    Studying That Suits You

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

    Quiz Team

    Related Documents

    Microbes and Disease.ppt

    Description

    Explore the fascinating world of microbes through this quiz. Learn about the different types of microbes including bacteria, viruses, and fungi, their sizes, structures, and reproduction methods. Test your knowledge on key examples and characteristics that define these tiny organisms.

    More Like This

    Use Quizgecko on...
    Browser
    Browser