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Microorganisms Test - 2

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Microorganisms Test - 2
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Robert Koch, in 1876, discovered the microbe causing _________________ disease.
    Solution
    Anthrax is a skin disease which affects sheep and cow and was discovered by Robert Koch.
  • Question 2
    1 / -0
    What is/are the source(s) of antibiotic tablets, capsules or injections?
    Solution
    The sources of these medicines are microorganisms. These medicines kill or stop the growth of a disease.
  • Question 3
    1 / -0
    Which of the following treatments prevents the spoilage of milk?
    Solution
    Pasteurisation prevents the spoilage of milk. It is the process of removing harmful pathogens from various types of food.
  • Question 4
    1 / -0
    Which of the following causes rust disease in wheat?
    Solution
    Fungus is responsible for rust disease in wheat.
  • Question 5
    1 / -0
    In which industry is yeast grown on natural sugars present in grains like barley, wheat and rice, and crushed fruit juice?
    Solution
    Yeast is grown on natural sugars present in grains like barley, wheat and rice, and crushed fruit juice in the wine industry.
  • Question 6
    1 / -0
    Which of the following are the causative agents of dengue and malaria, respectively?
    Solution
    Dengue is caused by a virus while malaria is caused by a protozoan. Aedes mosquito - dengue and Anopheles mosquito - malaria, are vectors for these diseases.
  • Question 7
    1 / -0
    Arun was observing roots of a pea plant under a microscope and found some microorganisms. Which of the following microorganisms was observed by Arun?
    Solution
    Pea is a leguminous plant. Rhizobium is found in the root nodules of leguminous plants.
  • Question 8
    1 / -0
    A microorganism has an irregular and constantly changing shape and it is found in stagnant water. Its infection in humans can affect liver and causes dysentery. Identify this microorganism.
    Solution
    Amoeba has an irregular and constantly changing shape and it is found in stagnant water. Its infection in humans can affect liver and causes dysentery.
  • Question 9
    1 / -0
    Which of the following food components is not able to prevent the growth of bacteria during food preservation?
    Solution
    Water is a good medium for the microorganisms to grow and flourish. The higher the moisture content, the more are the chances of food spoilage.
  • Question 10
    1 / -0
    Which of the following statements are correct?
    (a) Sugar reduces the moisture content that inhibits the growth of bacteria which spoil food.
    (b) Boiling kills many microorganisms.
    (c) Dry fruits and even vegetables are packed in air tight packets to prevent the attack of microbes.
    (d) Growth of microorganisms does not inhibit in very cold conditions.
    Solution
    Growth of microorganisms is inhibited in very cold conditions.
  • Question 11
    1 / -0
    Which of the following is a set of diseases caused by viruses in human beings?
    Solution
    Influenza, mumps and polio represent the set of diseases caused by viruses in human beings.
  • Question 12
    1 / -0
    Meat and fish are covered with dry salt to
    Solution
    Meat and fish are covered with dry salt to check the growth of bacteria.
  • Question 13
    1 / -0
    Which of the following is not a microorganism?
    Solution
    Anopheles is a mosquito. The rest of them are microorganisms.
  • Question 14
    1 / -0
    Which of the following activities is not performed by microorganisms?
    Solution
    Microorganisms decompose dead organic matter. These are used in the preparation of medicines and also in the baking industry. Plastic goods are non-biodegradable and cannot be acted upon by microorganisms.
  • Question 15
    1 / -0
    Which of the following is made from modified viruses or bacteria and is used to induce immunity in a human body?
    Solution
    Antibiotics are the substances that destroy or inhibit the growth of harmful microorganisms, whereas pathogen refers to a disease-causing organism. Vaccine refers to a biological preparation, which is made from modified viruses or bacteria to induce immunity in human beings, and antibodies are present in the blood and help in fighting against infections.
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