Biotechnology and microbes in human welfare Quiz-9

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NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced..
are very important in achieving your success in CLAT, DULLB and Other Law Exams..

Q1.  The main sources of biofertilisers are
  •  Protista
  •   Cyanobacteria
  •  Fungi
  •  All of these
b) Cyanobacteria.

Q2. Methanogens, growing anaerobically on cellulosic material, produce
  •  Methane
  •  Methane and carbon dioxide
  •  Methane and hydrogen
  •  Methane, carbon dioxide and hydrogen
d) Methane, CO2 Hydrogen. Biogas is a methane rich fuel gas produced by anaerobic breakdown or digestion of biomass with the help of methanogenic bacteria. Biogas is made up of methane, carbon dioxide with traces of hydrogen

Q3.  The nutritive medium for growing bacteria and many fungi in the laboratory is called
  •  Culture media
  •  Fermentation media
  •  Baking media
  •  None of these
a) The nutritive medium for growing bacteria and many fungi in the laboratory is called culture media

Q4. Yeast is used in the production of
  •  Citric acid and lactic acid
  •  Lipase and pectinase
  •  Bread and beer
  •  Cheese and butter
c) Bread is made through fermentation by Saccharomyces cerevisiae or commonly called baker’s yeast. Yeast species also used in alcoholic fermentation is S. cerevisiae (Brewer’s yeast)
Q5. Which of the following statements regarding baculoviruses as bio-control agents is/are correct?
I. Baculoviruses are pathogens that attack insects and other arthropods
II. Most of these biocontrol agents belong to the genus Nucleopolyhedro virus
III. They do not harm plants mammals, birds, fish and other non-target insects
IV. Baculoviruses are helpful in Integrated Pest Management (IPM) programme, in which beneficial insects are conserved
Choose the correct option
  •  I, II and III
  •   I, II and IV
  •  II, III and IV
  •  All of these
d) Baculovirus heliothis (a group of virus) are known to infect the larval stages of many harmful insects beetles, wasps and ants. A number of baculovirus, which are used as biopesticides belongs to the genus Nucleopohyledro virus These biological weapons are not only effective as potential biological control of harmful insects, but are also harmless to non-target organisms insects (plants, birds, mammals, non-targets insects etc). They are important in organic farming because of their specific action on harmful insects without causing any damage to beneficial insects as well as to the environment. Baculoviruses are helpful in Integrated Pest Management (IPM)Programme, in which beneficial insects are conserved

Q6.  Morphine, which is used as an analgesic is obtained from
  •   Cinchona officinalis
  •  Papaver somniferum
  •   Taxus brevifolia
  •  Berberis nilghiriensis
b) Morphine physiologically is the most active alkaloid of opium (Papaver somniferum). It has sleep and dream inducing properties. Besides, it is essentially an analgesic and sedative and is used as a well known pain killer.

Q7.Cod and shark liver oil is a source of
  • Energetic nutrients
  •  Constructive nutrients
  •  Energetic and constructive nutrients
  •  Protective nutrients
Q8. The free-living fungus Trichoderma can be used for
  • Killing insects
  •   Biological control of plant diseases
  •  Controlling butterfly caterpillars
  •  Producing antibiotics
b) Trichoderma is a free living saprophytic fungi that most commonly lives on dead organic matter in the soil and rhizosphere. It acts as a biopesticides for control of many soil borne disease

Q9.Secondary sewage treatment is mainly a
  •  Chemical process
  •  Physical process
  •  Mechanical process
  •  Biological process
(d) Secondary treatment of the liquid effluent from the primary settling tank is purely a biological treatment involving microbial activity .

Q10.  Which of the following microbe convert milk into curd?
  •  Bacteria
  •  Virus
  •  Fungi
  •  Protozoa
(a) In the process of making curd, bacteria convert milk into curd and milk protein into predigest milk protein. These bacteria then inside the growth of hostile (illness causing) bacteria inside the intestinal tract and promote beneficial bacteria needed for digestion .

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Biotechnology and microbes in human welfare Quiz-9
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