Biotechnology and microbes in human welfare Quiz-6

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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. Real product of apiculture is
  •  Honey
  •  Bee wax
  •  Both (a) and (b)
  •  None of these
No solution available

Q2.What name has been assigned to the genus produced by a cross between cabbage and radish?
  •  Secale
  •  Bursa pastoris
  •  Lysogenicophyll
  •  Raphanobrassica
d) Raphanobrassica and Triticale are intergenic hybrids. Raphanobrassica is the result of cross between Raphanus (radish) and Brassica (cabbage).

Q3.   Disease resistance crop is obtained by
  •  Crossing with new varieties
  •  Crossing with wild varieties
  •   Injecting with organic compounds
  •  None of the above
No solution available

Q4. Trichoderma sp. free living fungi has proved a useful microorganism of
  •  Gene transfer in higher plants
  •  Biological control of soil-borne plant pathogens
  •   Bioremediation of contaminated soils
  •   Reclamation of wastelands
(b) Trichoderma sp. has proved a useful microorganism for biological control of soil borne plant pathogens. It inhibits pathogens through release of gliotoxin, viridian, gliovirin and trichodermin like substances

Q5. Choose the cat fish from the following
  •   Cirrhina mrigala
  •   Wallago attu
  •  Labeo rohita
  •  Catla catla
b) Wallago attu (Mullhe), Rita rita (Tikanda), Mystus singhara (Singhara) and Clarius batrachus (Indian cat fish or magur) are some freshwater cat fishes of India.

Q6.  Yeast have been used for the commercial production of
I. ethanol II. bread III. cheese
Choose the correct option
  •   I and II
  •  I and III
  •   I, II and III
  •  None of these
a) Alcoholic beverages are defined as beverages that contain ethanol (C2H5OH). This ethanol is almost always produced by fermentation, the metabolism of carbohydrates by certain species of yeast under anaerobic or law-oxygen conditions. Beverages such as, wine, beer, or distilled spirits all use yeast at some stage of their production. Yeast the most common one being Sacharomyces cerevisiae, is used in baking as leavening agent, where it converts the food/fermentable sugars present in dough into the gas carbon dioxide. This causes the dough to expand or rise as gas forming pockets or bubbles. When the dough is baked, the yeast dies and the air pockets ‘set’, giving the baked product a soft and spongy textures. Cheese is formed by partial degradation of milk by different other microorganisms

Q7.Percentage composition of fibroin and sericin in silk is
  • 50 : 40
  •   80 : 20
  •  30 : 70
  •  40 : 60
b) Silk is composed of proteins. It consists of an inner part made up of fibroin protein and is covered with an outer envelope made up of sericerin protein. The silk thread contains 75-80% fibroin and 20-25% of sericin.
Q8.Pyrethrin is extracted from
  • Chrysanthemum cinorarifolium
  •   Derris eliptica
  •  Azadirachta indica
  •  Ryania speciosa
c) ‘Pyrethrin’ a chemical is produced by grinding of flowers of the plant Chrysanthemum cinerarifolium. Pyrethroids are synthetic derivatives of pyrethrin and are quick-acting broad spectrum, toxic insecticides. They are quite expensive, not used on a large scale in India at present.

Q9. Breeding of crops with high levels of minerals, vitamins and proteins is called
  •  Somatic hybridization
  •  Biofortification
  •  Biomagnifications
  •  Micropropagation
(b) Biofortification differs from ordinary fortification because it focuses on making plant foods more nutritious as the plants are growing rather than nutrients added to the foods when they are being processed.

Q10.  Swiss cheese is formed by the bacterium
  •  Aspergillus niger
  •  Lactobacillus
  •  Propionibacterium sharmanii
  •  Penicillium roqueforti
(c) Swiss cheese is manufactured with a single strains of Propionibacterium shermanii and Propionibacterium arabinosum. Its characteristic feature is formation of large holes due to production of large amount of CO2

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Biotechnology and microbes in human welfare Quiz-6
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