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Biotechnology Principles and Processes Test - 55

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Biotechnology Principles and Processes Test - 55
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  • Question 1
    1 / -0
    Lal Bahadur Shastri biotechnological centre is in 
    Solution
    • Lal Bahadur Shastri biotechnological centre is also known as 'National Research Centre on Plant Biotechnology' is in Delhi. 
    • It is a prominent organization dedicated to research and innovations in molecular biology and biotechnology.
  • Question 2
    1 / -0
    Streptomycin was first isolated in 1944 - 45 by ......................
    Solution
    In 1952, Selman Abraham Waksman was awarded the Nobel prize in physiology or medicine in recognition for his discovery of streptomycin, the first antibiotic active against tuberculosis
  • Question 3
    1 / -0
    Gray biotechnology is referred to as
    Solution
    White (also called gray) biotechnology involves industrial processes such as the production of new chemicals or the development of new fuels for vehicles, the use of cells, natural organisms and bio-organic compounds to synthesize materials, instead of petrochemicals or substitution of enzymes for caustic reagents.
  • Question 4
    1 / -0
    First antibiotic isolated was 
    Solution
    The first antibiotic discovered was called as Penicillin by Alexander Fleming in 1928 from Penicillium notatum. It is the antibiotic which inhibits the growth of bacteria and it was first used to treat the infection of Streptococcal septicemia.
    So, the correct answer is 'Penicillin'
  • Question 5
    1 / -0
    Most of the Eubacteriales antibiotics come from 
    Solution
    Eubacteriales is the order of true bacteria. They are gram-positive, spherical or rod-shaped forms; some are motile; in some classifications, it is considered an order of Schizomycetes. Bacillus  a simple rod shaped bacteria is the main source (about 70%) of antibiotics production and 30% antibiotics are produced from Pseudomonas.
    So, the correct answer is 'Bacillus'
  • Question 6
    1 / -0
    The enzyme diastase was identified by 
    Solution
    Diastase was the very first enzyme discovered by Jean-Francois Persoz and Anselme Payen in 1833. Diastase is an enzyme which helps to break carbohydrates into the simple sugar, which makes them easier to digest.
  • Question 7
    1 / -0
    Flemming, Chain and Florey were awarded the Nobel prize in 1945 for the discovery of
    Solution
    The Nobel prize in Physiology or Medicine 1945 was awarded jointly to Sir Alexander Fleming, Ernst Boris Chain and Sir Howard Walter Florey for the discovery of penicillin and its curative effect in various infectious diseases. 
  • Question 8
    1 / -0
    Which is the most commonly used enzyme for polymerase chain reaction?
    Solution
    • Taq polymerase is a thermostable DNA polymerase that is used in the polymerase chain reaction. 
    • It was named after the thermophilic bacterium Thermus aquaticus from which it was isolated by Thomas D. Brock in 1965. 
    • The polymerase enzyme is stable at a high range of temperature.

    Thus, the correct answer is option D. 
  • Question 9
    1 / -0
    Product of biotechnology is
    Solution
    • Biotechnology uses cellular and biomolecular processes to develop technologies and products that help to improve our lives and the health of our planet. Plants and animals can be improved by selectively breeding for particular traits or by genetic modification. 
    • Beneficial traits can be identified visually or by DNA profiling. Gene modification or transgenesis are used to produce therapeutic human proteins in cells or whole organisms. The cell or organism used depends upon how large and complex the protein is. For example, human insulin. 
    • Biotechnology improves crop insect resistance, use of biofertilizers, enhances crop herbicide tolerance, and facilitates the use of more environmentally sustainable farming practices. 
    • So, the correct answer is option D.
  • Question 10
    1 / -0
    Which of these is based on magnetic resonance?
    Solution
    A CT scan known as Computed Tomography uses computer-processed combinations of the number of X-ray measurements to see inside the object without cutting. PET scan is Positron Emission Tomography which helps the doctor to understand disease in the body. In case of sonography, ultrasonic waves are used for imaging. NMR is termed as Nuclear Magnetic Resonance Imaging where magnetic resonance is used for imaging purpose. Hence, Answer B is correct.
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