Gr 8 Natural Sciences Ch 1.3: Types of microorganisms
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Questions and Answers

Who is considered the first microbiologist?

  • Alexander Fleming
  • Robert Koch
  • Louis Pasteur
  • Antonie van Leeuwenhoek (correct)

    • What is the term for microorganisms that can only replicate within the cells of a host organism?

  • Protist
  • Virus (correct)
  • Bacteria
  • Fungi

    • What is the term for a condition that impairs normal functioning and is often caused by microorganisms?

  • Inflammation
  • Immunity
  • Infect
  • Disease (correct)

    • What is the kingdom that bacteria belong to?

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

    What is the term for the process by which microorganisms invade and multiply within a host organism?

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

    What is the term for microorganisms that do not fit neatly into the other kingdoms of life?

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

    What is the term for bacteria that cause diseases in humans, animals, and plants?

    <p>Pathogenic Bacteria</p> Signup and view all the answers

    What invention allowed humans to discover and study microorganisms?

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

    What is unique about viruses compared to bacteria?

    <p>They can infect all types of organisms</p> Signup and view all the answers

    What is the main function of beneficial fungi?

    <p>Decomposition and nutrient cycling</p> Signup and view all the answers

    What is a characteristic of protists?

    <p>They do not fit neatly into other kingdoms</p> Signup and view all the answers

    What is an example of a pathogenic protist?

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

    What is a positive impact of microorganisms?

    <p>Maintaining ecosystem health</p> Signup and view all the answers

    What is an industrial use of microorganisms?

    <p>Both A and B</p> Signup and view all the answers

    What is a way that microorganisms cause negative impacts?

    <p>By spoiling food</p> Signup and view all the answers

    What is an example of a pathogenic fungus?

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

    What is the primary reason why microorganisms require magnification to be observed?

    <p>They are extremely small.</p> Signup and view all the answers

    What is a common characteristic shared by all microorganisms?

    <p>They can be found in all environments.</p> Signup and view all the answers

    What is the primary role of beneficial bacteria in the ecosystem?

    <p>Fixing nitrogen in plants.</p> Signup and view all the answers

    What is the main difference between pathogenic and beneficial bacteria?

    <p>Their ability to cause disease.</p> Signup and view all the answers

    What is the primary component of a virus?

    <p>Genetic material (DNA or RNA)</p> Signup and view all the answers

    Which microorganisms are essential for nutrient cycling and decomposition?

    <p>Bacteria and fungi</p> Signup and view all the answers

    Which of the following is an example of a microorganism that is not a bacterium?

    <p>Fungi.</p> Signup and view all the answers

    What is the term for the diverse group of microorganisms that do not fit neatly into the other kingdoms of life?

    <p>Protist.</p> Signup and view all the answers

    What is the primary function of beneficial fungi in food production?

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

    What is the characteristic of protists that makes them difficult to categorize?

    <p>They can be plant-like, animal-like, or fungus-like</p> Signup and view all the answers

    What is the primary function of fungi in the ecosystem?

    <p>Decomposing organic matter.</p> Signup and view all the answers

    What is the negative impact of some microorganisms on food?

    <p>They can spoil food</p> Signup and view all the answers

    What is the term for the process by which microorganisms multiply and spread within a host organism?

    <p>Infection.</p> Signup and view all the answers

    Which of the following is an example of a pathogenic virus?

    <p>H1N1 influenza virus</p> Signup and view all the answers

    What is the role of microorganisms in genetic engineering?

    <p>They are used as vectors for gene transfer</p> Signup and view all the answers

    Which type of microorganism can infect all types of organisms?

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

    What is the primary characteristic that distinguishes viruses from bacteria?

    <p>Their requirement for a host organism to replicate</p> Signup and view all the answers

    Which type of microorganism is responsible for nitrogen fixation in plants?

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

    What is the primary role of beneficial bacteria in the ecosystem?

    <p>To produce certain foods like yogurt and cheese</p> Signup and view all the answers

    What is the primary difference between pathogenic and beneficial bacteria?

    <p>Their ability to cause disease</p> Signup and view all the answers

    What is the primary function of fungi in the ecosystem?

    <p>To decompose organic matter</p> Signup and view all the answers

    What is the primary characteristic of protists?

    <p>They do not fit neatly into the other kingdoms of life</p> Signup and view all the answers

    What is the primary reason why microorganisms are essential for the ecosystem?

    <p>They decompose organic matter and recycle nutrients</p> Signup and view all the answers

    What is the primary way that microorganisms impact human health?

    <p>They can be either beneficial or pathogenic</p> Signup and view all the answers

    What is the primary function of viruses?

    <p>To infect a host cell to reproduce</p> Signup and view all the answers

    What is the role of fungi in decomposition?

    <p>To break down organic matter into simpler nutrients</p> Signup and view all the answers

    What is the characteristic of protists that makes them difficult to categorize?

    <p>They are a diverse group of microorganisms that do not fit neatly into the other kingdoms</p> Signup and view all the answers

    What is the negative impact of some microorganisms on food?

    <p>They spoil food, making it unsafe for consumption</p> Signup and view all the answers

    What is the role of microorganisms in biotechnology?

    <p>To be used in genetic engineering, bioremediation, and other biotechnological applications</p> Signup and view all the answers

    What is the primary function of beneficial fungi in the ecosystem?

    <p>To play essential roles in decomposition, nutrient cycling, and food production</p> Signup and view all the answers

    What is the characteristic of viruses that makes them unique compared to bacteria?

    <p>They can infect all types of organisms</p> Signup and view all the answers

    What is the role of microorganisms in nutrient cycling?

    <p>To play essential roles in decomposition, nutrient cycling, and ecosystem health</p> Signup and view all the answers

    What is the primary function of beneficial bacteria in the ecosystem?

    <p>To fix nitrogen in plants and aid digestion</p> Signup and view all the answers

    What is unique about the structure of viruses compared to other microorganisms?

    <p>They consist of genetic material enclosed in a protein coat.</p> Signup and view all the answers

    Which of the following microorganisms can be found in nearly every environment on Earth?

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

    What is the primary role of beneficial fungi in the ecosystem?

    <p>Decomposition and nutrient cycling.</p> Signup and view all the answers

    What is the primary reason why microorganisms are essential for the ecosystem?

    <p>They play a crucial role in nutrient cycling and decomposition</p> Signup and view all the answers

    What is the primary impact of pathogenic microorganisms on human health?

    <p>They cause diseases and infections.</p> Signup and view all the answers

    Which of the following is a characteristic of bacteria?

    <p>They are incredibly diverse and can be found in nearly every environment on Earth</p> Signup and view all the answers

    What is a characteristic of protists?

    <p>They are diverse and microscopic.</p> Signup and view all the answers

    What is the primary function of fungi in the ecosystem?

    <p>To decompose organic matter</p> Signup and view all the answers

    What is the primary use of microorganisms in industrial applications?

    <p>Production of food, beverages, and antibiotics.</p> Signup and view all the answers

    Which of the following is a characteristic of viruses?

    <p>They can only replicate within the cells of a host organism</p> Signup and view all the answers

    What is a negative impact of microorganisms on the environment?

    <p>Food spoilage and waste.</p> Signup and view all the answers

    What is the primary function of protists in the ecosystem?

    <p>They do not have a specific function in the ecosystem</p> Signup and view all the answers

    What is the primary role of microorganisms in ecosystem health?

    <p>Ecological roles and nutrient cycling.</p> Signup and view all the answers

    What is a biotechnological application of microorganisms?

    <p>Genetic engineering and bioremediation.</p> Signup and view all the answers

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