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Microorganisms Test - 5

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Microorganisms Test - 5
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Weekly Quiz Competition
  • Question 1
    1 / -0
    What is the mode of infection of cholera?
    Solution

    Vibrio cholerae is the causative agent responsible for cholera. It is a bean-shaped bacterium with a long tail that it uses for self-propulsion. The bacteria are transmitted between humans through the faecal-oral route - a bite of contaminated food or a sip of contaminated water can cause infection.
    So, the correct option is 3.

  • Question 2
    1 / -0
    A micro-organism makes a hard covering around it to protect itself from unfavourable conditions. What is this hard covering known as?
    Solution
    Under unfavourable conditions Amoeba withdraws its pseudopodia and secretes a three-layered hard covering or cyst around itself. This phenomenon is termed as encystation. When conditions become favourable, the encysted Amoeba divides by the process of multiple fission and produces many pseudopodiospores . The cyst wall then bursts out and liberates the spores in the surrounding medium which then grow up into many adult Amoeba.
  • Question 3
    1 / -0
    Which of the following microorganisms is a gram positive bacterium?
    Solution
    Streptococcus is a gram positive bacterium.
  • Question 4
    1 / -0
    What are the end products formed by the fermentation of food?
    Solution
    The equation of fermentation is given below:Ethanol is also known as ethyl alcohol.
    So, the correct option is 3.
  • Question 5
    1 / -0
    Some organisms feed on dead and decaying matter for their nutritional requirement. These organisms fall in the group of
    Solution
    Saprophytes, especially a fungus or bacterium, lives on and gets the nourishment from dead organisms or decaying organic material. Saprophytes recycle organic material in the soil, breaking it down into simpler compounds that can be taken up by other organisms.
    So, the correct option is `Saprophytes`.
  • Question 6
    1 / -0
    Which disease is not caused by microorganisms?
    Solution
    Beri Beri is a deficiency of thiamin, more commonly known as vitamin B1. The body needs thiamin to break down and digest the foods we eat, to keep the metabolism going, and help the muscles and nervous system do their jobs effectively. Beriberi can affect the cardiovascular system or central nervous system. Beri Beri is not caused by microorganisms.
  • Question 7
    1 / -0
    Match the type of bacteria with the shape it has.

    Type of bacteria Shape
    1. Bacillus
    2. Vibrio
    3. Cocci
    4. Spirilla    		 A. Comma shaped
    B. Rod shaped
    C. Spiral
    D. Spherical
    Solution
    Type of Bacteria Shape
    1. Bacillus B. Rod shaped
    2. Vibrio A. Comma shaped
    3. Cocci D. Spherical
    4. Spirilla C. Spiral
  • Question 8
    1 / -0
    Which type of the medicine will be effective to treat bacterial diseases?
    Solution
    Antibiotics are powerful medicines that fight bacterial infections. They either kill bacteria or stop them from reproducing, allowing the body's natural defenses to eliminate the pathogens. Used properly, antibiotics can save lives.
  • Question 9
    1 / -0
    Which of the following organisms causes malaria?
    Solution
    Malaria is caused by protozoa of the genus Plasmodium.
    So, the correct option is 4.
  • Question 10
    1 / -0
    Which of the following is not a bacterial disease?
    Solution
    Measles is an infectious viral disease which causes fever and a red rash. It typically occurs in childhood.
  • Question 11
    1 / -0
    Which of the following is a water borne disease?
    Solution
    Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting. It can be fatal. It is caused by the bacteria Salmonella typhi. The infection is often passed on through contaminated food and drinking water.
  • Question 12
    1 / -0
    Which of the following locomotory organ is present in paramecium?
    Solution
    Cilia are the primary locomotory organs of paramecium which are covered throughout their body. It also have flagella as its secondary locomotory organ.
  • Question 13
    1 / -0
    Which of the following statements is true for parasites?
    Solution
    A parasite is an organism that lives in another organism and feed upon them, called the host, and often harms it. It depends on its host for survival. Without a host, a parasite cannot live, grow and multiply. For this reason, it rarely kills the host, but it can spread diseases, and some of these can be fatal.
  • Question 14
    1 / -0
    What is the mode of transmission of Amoebiasis?
    Solution
    Amoebiasis is an infection caused by the microorganism Entamoeba histolytica, that is transmitted through contaminated food or water.
  • Question 15
    1 / -0
    A student took a drop of pond water and observed it under microscope. A slipper shaped organism appeared, what could be that organism?
    Solution
    Paramecia are single-celled protists that are naturally found in aquatic habitats. They are typically oblong or slipper-shaped and are covered with short hairy structures called cilia.
  • Question 16
    1 / -0
    BCG vaccine against tuberculosis contains
    Solution
    BCG, or bacille Calmette-Guerin, is a vaccine for tuberculosis (TB) disease. BCG vaccine contains a live form of tuberculosis bacteria, which can "shed" from your injection site.
  • Question 17
    1 / -0
    Which of the following microorganisms moves with the help of pseudopodia?
    Solution
    Pseudopodia are temporary structures formed by the streaming flow of cytoplasm. In Amoeba, they are formed by an extension of the ectoplasm with an axial core of endoplasm. They are broader, shorter and blunt at the tip and are formed and retracted quickly. The movements performed by the formation and retraction of pseudopodia are called amoeboid movements, which bring about locomotion and a change in shape of the body.
  • Question 18
    1 / -0
    Which of the following is the causal organism of sleeping sickness?
    Solution
    Sleeping sickness is caused by two germs (protozoa), Trypanosoma brucei rhodesiense and Trypanosoma brucei gambiense. Hence, option 4 is the correct answer.
  • Question 19
    1 / -0
    Which of the following diseases is not caused by protozoa?
    Solution
    Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting. It can be fatal. It is caused by the bacteria Salmonella typhi. The infection is often passed on through contaminated food and drinking water.
  • Question 20
    1 / -0
    Which of the following organisms grows on rotten fruits and vegetables?
    Solution
    Rhizopus is a genus of common saprophytic fungi on plants and specialized parasites on animals.
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