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 (C)</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 (D)</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 (B)</p> Signup and view all the answers

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

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

What invention allowed humans to discover and study microorganisms?

<p>Microscope (B)</p> Signup and view all the answers

What is unique about viruses compared to bacteria?

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

What is the main function of beneficial fungi?

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

What is a characteristic of protists?

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

What is an example of a pathogenic protist?

<p>Plasmodium (D)</p> Signup and view all the answers

What is a positive impact of microorganisms?

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

What is an industrial use of microorganisms?

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

What is a way that microorganisms cause negative impacts?

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

What is an example of a pathogenic fungus?

<p>Candida (C)</p> Signup and view all the answers

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

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

What is a common characteristic shared by all microorganisms?

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

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

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

What is the main difference between pathogenic and beneficial bacteria?

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

What is the primary component of a virus?

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

Which microorganisms are essential for nutrient cycling and decomposition?

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

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

<p>Fungi. (B)</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. (C)</p> Signup and view all the answers

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

<p>Fermentation (A)</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 (B)</p> Signup and view all the answers

What is the primary function of fungi in the ecosystem?

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

What is the negative impact of some microorganisms on food?

<p>They can spoil food (D)</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. (D)</p> Signup and view all the answers

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

<p>H1N1 influenza virus (C)</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 (D)</p> Signup and view all the answers

Which type of microorganism can infect all types of organisms?

<p>Viruses (C)</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 (A)</p> Signup and view all the answers

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

<p>Bacteria (A)</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 (C)</p> Signup and view all the answers

What is the primary difference between pathogenic and beneficial bacteria?

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

What is the primary function of fungi in the ecosystem?

<p>To decompose organic matter (C)</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 (B)</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 (D)</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 (D)</p> Signup and view all the answers

What is the primary function of viruses?

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

What is the role of fungi in decomposition?

<p>To break down organic matter into simpler nutrients (B)</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 (B)</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 (B)</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 (A)</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 (C)</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 (D)</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 (C)</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 (D)</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. (C)</p> Signup and view all the answers

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

<p>Bacteria (A)</p> Signup and view all the answers

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

<p>Decomposition and nutrient cycling. (A)</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 (B)</p> Signup and view all the answers

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

<p>They cause diseases and infections. (C)</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 (B)</p> Signup and view all the answers

What is a characteristic of protists?

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

What is the primary function of fungi in the ecosystem?

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

What is the primary use of microorganisms in industrial applications?

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

What is a negative impact of microorganisms on the environment?

<p>Food spoilage and waste. (C)</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 (D)</p> Signup and view all the answers

What is the primary role of microorganisms in ecosystem health?

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

What is a biotechnological application of microorganisms?

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

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