Self Studies
Self Studies
Self Studies
Self Studies

Micro-organisms Test - 4

Result Self Studies

Micro-organisms Test - 4
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Amoeba can move very fast by which of the following locomotory organs?
    Solution
    The locomotory organ of the Amoeba is called pseudopodia which are also termed as 'false feet'. These are elongated projections produced by the extension of the cell membrane. As the membrane gets along with it, the cytoplasm fills that space to facilitate the extending or shortening of the pseudopodia. As the pseudopodia get extended and shortened, the body of the Amoeba can move in a specific direction.
  • Question 2
    1 / -0
    Which of the following organisms is not unicellular?
    Solution
    Fungus can be multicellular like mushroon we eat.
  • Question 3
    1 / -0
    Amoeba engulfs food from environment by which method?
    Solution
    Amoeba obtains its food by the process of endocytosis. It has flexible cell membrane. It engulfs the food particle with the help of pseudopodia and then forms a vacuole around it.
  • Question 4
    1 / -0
    Which of the following term describes the undefined region of the nucleus in prokaryotes?
    Solution
    The undefined nuclear region of prokaryotes is also known as the nucleoid. Prokaryotes do not contain proper cell organelles, and hence the nuclear material is just accumulated indefinitely in a region known as the nucleoid. A Prokaryotic cell is primitive in the organisation.
  • Question 5
    1 / -0
    A microorganism makes a hard covering around it to protect itself from unfavorable conditions. What is this hard covering known as?
    Solution
    Cyst is the outer covering. Some other bacteria, to overcome unfavourable conditions, develop a hard, protective covering called cyst around themselves. When the conditions become favourable, the cyst ruptures and the bacterium emerges, grows and reproduces.
  • Question 6
    1 / -0
    Which of the following organisms is not a microorganism?
    Solution
    Anopheles is a genus of mosquito.Malaria is transmitted to humans by female mosquitoes of the genus Anopheles. Female mosquitoes take blood meals for egg production, and these blood meals are the link between the human and the mosquito hosts in the parasite life cycle.
  • Question 7
    1 / -0
    Diatoms fall into which kind of category of organisms?
    Solution
    Diatoms are classified as eukaryotes, organisms with a membrane-bound cell nucleus, that separates them from the prokaryotes archaea and bacteria. Diatoms are a type of plankton called phytoplankton, the most common of the plankton types. Diatoms fall into which kind of category of algae.
  • Question 8
    1 / -0
    What are the end products formed by the fermentation of food?
    Solution
    Fermentation is the process of breaking down sugar substances by chemical means involving microorganisms and releasing heat. The end products of fermentation are alcohol and carbon dioxide.
  • Question 9
    1 / -0
    Some organisms feed on dead and decaying matter for their nutritional requirement. These organisms fall in the group of
    Solution
    Saprophytes are more generally plants, fungi, or micro-organisms that live on dead or decomposing matter. Some may more accurately be called myco-heterotrophs because they actually parasitise fungi, rather than dead organic matter directly.
  • Question 10
    1 / -0
    What is the shape of Lactobacillus?
    Solution
    Lactobacilli are rod-shaped, Gram-positive, fermentative, organotrophs. They are usually straight, although they can form spiral or coccobacillary forms under certain conditions.
  • Question 11
    1 / -0
    Which of the following organisms is carrier of Plasmodium vivax?
    Solution
    Anopheles carry plasmodium vivax. Malaria is a mosquito-borne parasitic infection spread by Anopheles mosquitoes. The Plasmodium parasite that causes malaria is neither a virus nor a bacterium – it is a single-celled parasite that multiplies in red blood cells of humans as well as in the mosquito intestine.
  • Question 12
    1 / -0
    What type of cellular organization is present in protozoa?
    Solution
    Protozoa are unicellular eukaryotes. As in all eukaryotes, the nucleus is enclosed in a membrane. All the activities are performed by single celled body. However, specialized cytoplasmic structures, or the organelles carry on specific functions, thus illustrating division of labour.
  • Question 13
    1 / -0
    Which of the following statements is true for parasites?
    Solution
    A parasite is an organism that lives in another organism, 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
    Which of the following bacteria is comma shaped?
    Solution
    Vibrio is a genus of Gram-negative bacteria, possessing a curved-rod shape (comma shape), several species of which can cause foodborne infection, usually associated with eating undercooked seafood.
  • Question 15
    1 / -0
    In which of the following organisms, mitochondria are absent?
    Solution
    A prokaryotic cell lacks membrane-bound cell organelles and nucleus whereas, a eukaryotic cell consists of membrane-bound cellular organelles and well-defined nucleus. Mitochondria are absent in bacteria and blue-green algae.
  • Question 16
    1 / -0
    What types of microorganisms are bacetriophage?
    Solution
    A bacteriophage is a type of virus that infects bacteria. In fact, the word "bacteriophage" literally means "bacteria eater," because bacteriophages destroy their host cells. All bacteriophages are composed of a nucleic acid molecule that is surrounded by a protein structure.
  • Question 17
    1 / -0
    What is the mode of transmission of AIDS?
    Solution
    HIV is spread mainly by having sex or sharing injection drug equipment, such as needles, with someone who has HIV.
    So, the correct answer is (4).
  • Question 18
    1 / -0
    Which of the following vaccines is effective against tuberculosis?
    Solution
    Ans-2
    The vaccine against tuberculosis is BCG (Bacilli Calmette-Guerin). The vaccine was invented by French bacteriologists Albert Calmette and Camille Guerin and they named the vaccine BCG (Bacilli Calmette-Guerin).
  • Question 19
    1 / -0
    What is the causative organism of hepatitis?
    Solution
    Viral hepatitis is most commonly caused by hepatitis A virus (HAV), hepatitis B virus (HBV), and hepatitis C virus (HCV). These three viruses can all result in acute disease with symptoms of nausea, abdominal pain, fatigue, malaise, and jaundice.
    So, the correct option is (3).
  • Question 20
    1 / -0
    Which of the following diseases generally occurs in summers during the rainy season due to bad personal hygiene and poor sanitation?
    Solution
    Gastroenteritis is an inflammation of the lining of the intestines caused by a virus, bacteria, or parasites.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now