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All questions of Biotechnology & its Applications for EmSAT Achieve Exam
First fermented acid is :- a)Gluconic acid
- b) Lactic acid
- c)Fumaric acid
- d)All the above
Correct answer is option 'B'. Can you explain this answer?
First fermented acid is :
a)
Gluconic acid
b)
Lactic acid
c)
Fumaric acid
d)
All the above
|
|
Santunu Pradhan answered |
Lactic acid, fermented from bacillus lactii. It is the first fermented acid.
A technology which has found immense use in solving cases of disputed parentage is- a)Monoclonal antibody production
- b)DNA finger printing
- c)Polymerase chain reaction
- d)Recombinant DNA technology
Correct answer is option 'B'. Can you explain this answer?
A technology which has found immense use in solving cases of disputed parentage is
a)
Monoclonal antibody production
b)
DNA finger printing
c)
Polymerase chain reaction
d)
Recombinant DNA technology
|
Mohammad Karim answered |
Option B - for exapmple for identifying the true father DNA samples of child, mother and possible fathers are taken and their DNA fingerprints are obtained. the print of child DNA Match to the prints of biological parents
Genetically engineered bacteria have been used in commercial production of- a)Thyroxine
- b)Testosterone
- c)Human insulin
- d)Melatonium
Correct answer is option 'C'. Can you explain this answer?
Genetically engineered bacteria have been used in commercial production of
a)
Thyroxine
b)
Testosterone
c)
Human insulin
d)
Melatonium
|
|
Kadambala Hemalatha answered |
E coli is mainly used in biotechnology for the production of insulin. this artificially produced insulin is calld humulin.
Conversion of sugar into alcohol during fermentation is due to the direct action of- a)Temperature
- b)Microorganisms
- c)Zymase
- d)Concentration of sugar solution
Correct answer is option 'C'. Can you explain this answer?
Conversion of sugar into alcohol during fermentation is due to the direct action of
a)
Temperature
b)
Microorganisms
c)
Zymase
d)
Concentration of sugar solution
|
|
Priyanshu Kumar answered |
Zymase is the enzyme which changes the simple sugars, dextrose and fructose into carbon dioxide gas and alcohol at 370C, and several esters which result in producing the unique aroma flavor and taste of bread.
Sugar or starch is used as the carbohydrate source. Zymase is the enzyme found in yeast and some bacteria.
* that why option """c""" is correct
Sugar or starch is used as the carbohydrate source. Zymase is the enzyme found in yeast and some bacteria.
* that why option """c""" is correct
The American company which is involved in the manufacturing of Humulin is- a)Elixir
- b)Ranbaxy
- c)Prohealth
- d)Eli Lily
Correct answer is option 'D'. Can you explain this answer?
The American company which is involved in the manufacturing of Humulin is
a)
Elixir
b)
Ranbaxy
c)
Prohealth
d)
Eli Lily
|
Harshitha Dey answered |
In 1983, the American company Eli Lily prepared two DNA sequences corresponding to A and B and introduced into plasmid of E.coli to produce insulin chain.
Cultivation of Bt cotton has been much in the news. The prefix Bt means- a)“Barium treated” cotton seeds
- b)“Bigger thread” variety of cotton with better tensile strength
- c)Carrying an endotoxin gene from Bacillus thuringiensis
- d)Produced by “biotechnology” using restriction enzymes and ligases
Correct answer is option 'C'. Can you explain this answer?
Cultivation of Bt cotton has been much in the news. The prefix Bt means
a)
“Barium treated” cotton seeds
b)
“Bigger thread” variety of cotton with better tensile strength
c)
Carrying an endotoxin gene from Bacillus thuringiensis
d)
Produced by “biotechnology” using restriction enzymes and ligases
|
Rajeev Saxena answered |
Bt-cotton, Bt-tobacco, Bt-tomato etc., are transgenic plants having Bt-2 gene encoding Bt toxin (e.g., Thurioside). Bt-toxin gene has been isolated from a bacteria Bacillus thuringiensis there for called Bt. (i.e., Bacillus thuringiensis). These plants are resistant for more than 140 species of insects including common cabbage worm, tent caterpillars, bag worms, canker worms, gypsy worm etc.
The term ‘Humulin’ is used for- a)Hydrolytic enzyme
- b)Isoenzyme
- c)Human insulin
- d)Antibiotic
Correct answer is option 'C'. Can you explain this answer?
The term ‘Humulin’ is used for
a)
Hydrolytic enzyme
b)
Isoenzyme
c)
Human insulin
d)
Antibiotic
|
|
Rohan Singh answered |
Humulin is human insulin used for treating diabetes. Prior to its development, diabetics used insulin isolated from pig and cow pancreases. Developed by Genentech, the first American biotechnology company, Humulin was licensed to Eli Lilly and became the first marketable product created through recombinant DNA technology. Its licensing by the FDA in October 1982 also made it the first recombinant pharmaceutical approved for use in the United States.
Which of the following is not applicable for a biopatent?- a)Formation of new products
- b)Unearthing the DNA sequences
- c)Discovery of cell lines
- d)Using the existing technology to produce new products
Correct answer is option 'C'. Can you explain this answer?
Which of the following is not applicable for a biopatent?
a)
Formation of new products
b)
Unearthing the DNA sequences
c)
Discovery of cell lines
d)
Using the existing technology to produce new products
|
Geetika Shah answered |
A biological patent is a patent on an invention in the field of biology that by law allows the patent holder to exclude others from making, using, selling, or importing the protected invention for a limited period of time. Hence, the correct option is c.
Hybridoma technology has been successfully used in- a)Production of alcohol in bulk
- b)Synthesis of monoclonal antibodies
- c)Synthesis of haemoglobin
- d)Production of somatic hybrids
Correct answer is option 'B'. Can you explain this answer?
Hybridoma technology has been successfully used in
a)
Production of alcohol in bulk
b)
Synthesis of monoclonal antibodies
c)
Synthesis of haemoglobin
d)
Production of somatic hybrids
|
|
Rajat Kapoor answered |
Hybridoma technology has contributed to virtually all areas of biology and medicine and set the scene for important advances in cell biology and immunodiagnostics. Blood transfusion and transfusion medicine have benefited significantly from development in hybridoma technology, and this has resulted in the generation of a wide range of monoclonal antibodies to human blood group antigens. These antibodies have also had an impact on diagnostic techniques such as enzyme-linked immunosorbent assay and flow cytometry as well as on the application of therapeutic agents in the clinical environment. However, rapid advances in the development of knockout and transgenic mice as well as in nucleic acid-based immunization may well lead hybridoma technology into a new era.
Insect resistance transgenic cotton has been produced by inserting a piece of DNA from- a)A virus
- b)A bacterium
- c)A wild relative of cotton
- d)An insect
Correct answer is option 'B'. Can you explain this answer?
Insect resistance transgenic cotton has been produced by inserting a piece of DNA from
a)
A virus
b)
A bacterium
c)
A wild relative of cotton
d)
An insect
|
Syed Saif answered |
Bacillus killing the larvae of flour moths in Germany and published a description of the bacterium and its … Mycogen, another small biotechnology firm, instead cloned Bt genes and expressed them in an alternate host, Pseudomonas fluorescens, a bacterial species common in transgenic cotton.
The term antibiotic was coined by- a)Alexander Fleming
- b)S.Waksman
- c)Louis Pasteur
- d)Edward Jenner
Correct answer is option 'B'. Can you explain this answer?
The term antibiotic was coined by
a)
Alexander Fleming
b)
S.Waksman
c)
Louis Pasteur
d)
Edward Jenner
|
|
Sanjana Singh answered |
Selman Waksman, the microbiologist who discovered streptomycin , first used the word 'Antibiotic' in medical in 1943.
So, the Correct answers is 'Waksman'.
So, the Correct answers is 'Waksman'.
Which is not a character of good fire wood- a)Highly combustible
- b)Soft wood
- c)Non resinoces and non smoky
- d)High caloric value
Correct answer is option 'B'. Can you explain this answer?
Which is not a character of good fire wood
a)
Highly combustible
b)
Soft wood
c)
Non resinoces and non smoky
d)
High caloric value
|
|
Kiran Sarmah answered |
Soft wood does not burn for longer period and also does not produces too much heat. Hence it is not ideal for burning.
The bacteria generally used for genetic engineering is - a)Agro bacterium
- b)Bacillus
- c)Pseudomonas
- d)Clostridium
Correct answer is option 'A'. Can you explain this answer?
The bacteria generally used for genetic engineering is
a)
Agro bacterium
b)
Bacillus
c)
Pseudomonas
d)
Clostridium
|
|
Ananya Singh answered |
The two most important bacterias are E.coli (which is used for commercial production) and Agrobacterium i.e. agrobacterium tumifaciens.
Agrobacterium has T. DNA which is transferred in host cells. That's why this bacteria is called as natural genetic engineer which is generally used for genetic engineering.
Agrobacterium has T. DNA which is transferred in host cells. That's why this bacteria is called as natural genetic engineer which is generally used for genetic engineering.
A company has developed a GM maize plant which produces high amount of sugar. The right granted to the company because of which others cannot use it is- a)Biopiracy
- b)Eugenics
- c)Biopatent
- d)Bioethics
Correct answer is option 'C'. Can you explain this answer?
A company has developed a GM maize plant which produces high amount of sugar. The right granted to the company because of which others cannot use it is
a)
Biopiracy
b)
Eugenics
c)
Biopatent
d)
Bioethics
|
Priyanka Iyer answered |
The right granted to the company or organization of which others cannot use it is called biopatent. This right is given as intellectual right to the company.
ELISA is- a)Enzyme ligated immunosorbent assay
- b)Enzye linked immunosorbent array
- c)Energy linked immunosorbent assessment
- d)Enzyme linked immunosorbent assay
Correct answer is option 'D'. Can you explain this answer?
ELISA is
a)
Enzyme ligated immunosorbent assay
b)
Enzye linked immunosorbent array
c)
Energy linked immunosorbent assessment
d)
Enzyme linked immunosorbent assay
|
Palak Khanna answered |
ELISA is abbreviation of Enzyme linked immunosorbent assay. It is used to detected the disease at early stage.
Which of the following is an advantage of transgenesis?- a)Study of diseases and gene therapy
- b)Increased production of biological products
- c)Vaccine safety testing
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
Which of the following is an advantage of transgenesis?
a)
Study of diseases and gene therapy
b)
Increased production of biological products
c)
Vaccine safety testing
d)
All of the above
|
|
Akshitha answered |
Option Dis correct coz all the option true regarding transgensis
Which one of the microorganism is used for production of citric acid in industries ?- a)Lactobacillus bulgaricus
- b)Penicillium citrinum
- c)Aspergillus niger
- d)Rhizopus nigricans
Correct answer is option 'C'. Can you explain this answer?
Which one of the microorganism is used for production of citric acid in industries ?
a)
Lactobacillus bulgaricus
b)
Penicillium citrinum
c)
Aspergillus niger
d)
Rhizopus nigricans
|
Vivek Patel answered |
Microorganisms can produce citric acid. The fungus Aspergillus Niger is most commonly used for industrial production of citric acid. The other organisms (although less important) include A. clavatus, A. wentii, Penicillium luteum, Candida catenula, C. guilliermondii and Corynebacterium sp.
Useful biological products are obtained from transgenic animals to treat disease like
i. Emphysema
ii. AIDS
iii. Cystic fibrosis
iv. Phenylketonuria- a)Only ii, iii and iv
- b)Only i, iii and iv
- c)Only i, ii and iii
- d)Only i, ii and iv
Correct answer is option 'B'. Can you explain this answer?
Useful biological products are obtained from transgenic animals to treat disease like
i. Emphysema
ii. AIDS
iii. Cystic fibrosis
iv. Phenylketonuria
i. Emphysema
ii. AIDS
iii. Cystic fibrosis
iv. Phenylketonuria
a)
Only ii, iii and iv
b)
Only i, iii and iv
c)
Only i, ii and iii
d)
Only i, ii and iv
|
Mahi Shah answered |
Useful biological products are obtained from transgenic animals to treat disease like Emphysema, Cystic fibrosis and Phenylketonuria.
A transgenic food crop which may help in solving the problem of night blindness in developing countries is- a)Bt soybean
- b)Flavrsavr tomatoes
- c)Golden rice
- d)Starlink maize
Correct answer is option 'C'. Can you explain this answer?
A transgenic food crop which may help in solving the problem of night blindness in developing countries is
a)
Bt soybean
b)
Flavrsavr tomatoes
c)
Golden rice
d)
Starlink maize
|
|
Chirag Ghosh answered |
Golden Rice as a solution to night blindness
Golden Rice is a genetically modified rice variety that has been developed to help combat vitamin A deficiency, which can lead to night blindness and other health problems in developing countries. The rice is genetically modified to produce beta-carotene, a precursor to vitamin A, which is not naturally found in traditional rice varieties.
How does Golden Rice work?
Golden Rice is genetically engineered to produce beta-carotene in the endosperm of the rice grain, which is the part of the plant that is eaten. Beta-carotene is a pigment that gives fruits and vegetables their orange or yellow color, and it is also a precursor to vitamin A. When humans consume beta-carotene, it is converted to vitamin A in the body.
Why is Golden Rice important?
Vitamin A deficiency is a serious health problem in many developing countries, particularly in Southeast Asia and Africa. According to the World Health Organization, an estimated 250 million preschool children are vitamin A deficient, and it is estimated that between 250,000 and 500,000 malnourished children become blind every year due to vitamin A deficiency. Golden Rice is one potential solution to this problem, as it provides a source of beta-carotene that can be converted to vitamin A in the body.
Conclusion
Golden Rice is a promising solution to the problem of vitamin A deficiency in developing countries, which can lead to night blindness and other health problems. While there is still some controversy surrounding genetically modified crops, Golden Rice has the potential to make a significant impact on the health and well-being of millions of people around the world.
Golden Rice is a genetically modified rice variety that has been developed to help combat vitamin A deficiency, which can lead to night blindness and other health problems in developing countries. The rice is genetically modified to produce beta-carotene, a precursor to vitamin A, which is not naturally found in traditional rice varieties.
How does Golden Rice work?
Golden Rice is genetically engineered to produce beta-carotene in the endosperm of the rice grain, which is the part of the plant that is eaten. Beta-carotene is a pigment that gives fruits and vegetables their orange or yellow color, and it is also a precursor to vitamin A. When humans consume beta-carotene, it is converted to vitamin A in the body.
Why is Golden Rice important?
Vitamin A deficiency is a serious health problem in many developing countries, particularly in Southeast Asia and Africa. According to the World Health Organization, an estimated 250 million preschool children are vitamin A deficient, and it is estimated that between 250,000 and 500,000 malnourished children become blind every year due to vitamin A deficiency. Golden Rice is one potential solution to this problem, as it provides a source of beta-carotene that can be converted to vitamin A in the body.
Conclusion
Golden Rice is a promising solution to the problem of vitamin A deficiency in developing countries, which can lead to night blindness and other health problems. While there is still some controversy surrounding genetically modified crops, Golden Rice has the potential to make a significant impact on the health and well-being of millions of people around the world.
During the formation of bread it becomes porous due to release of CO2 by the action of- a)Yeast
- b)Bacteria
- c)Virus
- d)Protozoans
Correct answer is option 'A'. Can you explain this answer?
During the formation of bread it becomes porous due to release of CO2 by the action of
a)
Yeast
b)
Bacteria
c)
Virus
d)
Protozoans
|
|
Vishal Kumar answered |
Many breads are leavened by yeast. The yeast most commonly used for leavening bread is Saccharomyces cerevisiae, the same species used for brewing alcoholic beverages. This yeast ferments some of the carbohydrates in the flour, including any sugar, producing carbon dioxide. Commercial bakers often leaven their dough with commercially produced baker's yeast. Baker's yeast has the advantage of producing uniform, quick, and reliable results, because it is obtained from a pure culture. Many artisan bakers produce their own yeast with a growth culture. If kept in the right conditions, it provides leavening for many years.
The microorganism grown on molasses and sold as a food flavouring substance is- a)Saccharomyces
- b)Rhizopus
- c)Acetobacter
- d)Lactobacillus
Correct answer is option 'A'. Can you explain this answer?
The microorganism grown on molasses and sold as a food flavouring substance is
a)
Saccharomyces
b)
Rhizopus
c)
Acetobacter
d)
Lactobacillus
|
|
Gaurav Kumar answered |
The strain of Saccharomyces cerevisiae fungus is commonly known as baker's yeast. The organism is widely used in baking industry. It has the ability to produce desirable flavor. The organisms are added to the dough of bread and cakes and allowed to perform fermentation. The fermentation is brought by converting the fermentable sugars to alcohol and carbon dioxide. The organisms are also cultured or grown on molasses. They bring about the anaerobic fermentation and this helps in providing flavor to the substance.
Thus, the correct answer is option A.
A radioactively labeled Probe can be detected by- a)Autoradiography
- b)UV rays
- c)ELISA
- d)PCR
Correct answer is option 'A'. Can you explain this answer?
A radioactively labeled Probe can be detected by
a)
Autoradiography
b)
UV rays
c)
ELISA
d)
PCR
|
|
Priyanka Iyer answered |
Radioactively labeled probe can be detected by autoradiography. A single stranded DNA or RNA tagged with a radioactive molecule is allowed to hybridise to its complementary DNA in a clone of cells followed by detecting using autoradiography.
Human insulin is being commercially produced from a transgenic species of- a)Mycobacterium
- b)Rhizobium
- c)Saccharomyces
- d)Escherichia
Correct answer is option 'D'. Can you explain this answer?
Human insulin is being commercially produced from a transgenic species of
a)
Mycobacterium
b)
Rhizobium
c)
Saccharomyces
d)
Escherichia
|
|
Raza Great answered |
Human insulin is produced from genetically engineered E.coli. By using genetic engineering or recombinant DNA technology, insulin-producing genes from human beings have been transferred into E.coli. bacteria, which produced insulin called 'humulin' for clinical use. This type of insulin was produced commercially by an American pharmaceutical firm Eli Lily on 5th July, 1983
A free living nitrogen-fixing cyanobacterium which can also from symbiotic association with the water fern Azolla is - a)Anabaena
- b)Tolypothrix
- c)Chlorella
- d)Nostoc
Correct answer is option 'A'. Can you explain this answer?
A free living nitrogen-fixing cyanobacterium which can also from symbiotic association with the water fern Azolla is
a)
Anabaena
b)
Tolypothrix
c)
Chlorella
d)
Nostoc
|
Saumya Banerjee answered |
Anabaena is a free-living nitrogen fixing cyanobacterium which can form symbiotic association with water fern Azolla. The alga Tolypothrix belongs to class-Cyanophyceae. Some forms of Chlorella form symbiotic association in lichens and in certain invertebrates such as Hydra, Paramecium and sponges. Some species of Nostoc have been reported to fix atmospheric nitrogen and tend to maintain fertility of paddy fields.
Which one of the following is not true about antibiotics- a)First antibiotic was discovered by Alexander Fleming
- b)The term 'antibiotic' was coined by S. Waksman in 1942.
- c)Some persons can be allergic to a particular antibiotic
- d)Each antibiotic is effective only against one particular kind of germ.
Correct answer is option 'D'. Can you explain this answer?
Which one of the following is not true about antibiotics
a)
First antibiotic was discovered by Alexander Fleming
b)
The term 'antibiotic' was coined by S. Waksman in 1942.
c)
Some persons can be allergic to a particular antibiotic
d)
Each antibiotic is effective only against one particular kind of germ.
|
|
Rocky Handsome answered |
• The antibiotic is the chemical substance produced by the microorganisms that can kill or inhibit the growth of the other microorganisms. There are two types of antibiotics on the basis of their action.
-》 The broad-spectrum antibiotic refers to an antibiotic that acts against a wide range of disease-causing bacteria. A broad-spectrum antibiotic act against both Gram-positive and Gram-negative bacteria, in contrast to a narrow-spectrum antibiotic, which is effective against specific families of bacteria. An example of a commonly used broad-spectrum antibiotic is ampicillin.
•Thus, the correct answer is option D.
-》 The broad-spectrum antibiotic refers to an antibiotic that acts against a wide range of disease-causing bacteria. A broad-spectrum antibiotic act against both Gram-positive and Gram-negative bacteria, in contrast to a narrow-spectrum antibiotic, which is effective against specific families of bacteria. An example of a commonly used broad-spectrum antibiotic is ampicillin.
•Thus, the correct answer is option D.
The new strain of bacteria produced by biotechnology in alcohol industry is- a)Escherichia coli
- b)Saccharomyces cerevisiae
- c)Bacillus subtilis
- d)Pseudomonas putida
Correct answer is option 'D'. Can you explain this answer?
The new strain of bacteria produced by biotechnology in alcohol industry is
a)
Escherichia coli
b)
Saccharomyces cerevisiae
c)
Bacillus subtilis
d)
Pseudomonas putida
|
Suresh Iyer answered |
Pseudomonas putida F1 (Bacteria 6.2 Mb) is a versatile environmental isolate that is capable of growth on several aromatic hydrocarbons, including benzene, toluene, ethylbenzene and p -cymene. Its broad substrate toluene dioxygenase has been widely utilized in biocatalytic syntheses of chiral chemicals, as well as in the metabolism and detoxification of TCE, and in the production of indigo from indole. P. putida F1 is known to be chemotactic to aromatic hydrocarbons and chlorinated aliphatic compounds and has the potential for use in bioremediation applications.
Which type of transgenic microorganism - a)Escherichia coli
- b)Entamoba coli
- c)Prendomona
- d)Clostridium
Correct answer is option 'A'. Can you explain this answer?
Which type of transgenic microorganism
a)
Escherichia coli
b)
Entamoba coli
c)
Prendomona
d)
Clostridium
|
|
Vikas Ganjai answered |
Escherichia-coli
coz they are used in RDna technology
coz they are used in RDna technology
Propionic-bacteria is an important source of- a)Vitamin-C
- b)Cobalamin
- c)Sugars
- d)Proteins
Correct answer is option 'B'. Can you explain this answer?
Propionic-bacteria is an important source of
a)
Vitamin-C
b)
Cobalamin
c)
Sugars
d)
Proteins
|
Nayanika Dasgupta answered |
Biomass of the bacteria from the Propionibacterium genus constitutes sources of vitamins from the B group, including B 12, trehalose and numerous bacteriocins. These bacteria are also capable of synthesizing organic acids such as propionic acid and acetic acid.
Cobalamin also called as vitamin B12, it is an important vitamin for the normal formation of red blood cells and for the health of the nerve tissues. Undetected and untreated vitamin B12 deficiency can lead to anemia and permanent nerve and brain damage.
Bio-energy is the energy obtained from- a)Biological sources
- b)Coal
- c)Petroleum
- d)Natural gases
Correct answer is option 'A'. Can you explain this answer?
Bio-energy is the energy obtained from
a)
Biological sources
b)
Coal
c)
Petroleum
d)
Natural gases
|
Itz_dm answered |
Answer is A ,because all the given options comes under the given remaining option A .
Cheese and yoghurt are products of- a)Pasteurisation
- b)Distillation
- c)Dehydration
- d)Fermentation
Correct answer is option 'D'. Can you explain this answer?
Cheese and yoghurt are products of
a)
Pasteurisation
b)
Distillation
c)
Dehydration
d)
Fermentation
|
|
Swati Verma answered |
Fermented milk is the collective name for products such as yoghurt, ymer, kefir, cultured buttermilk, filmjolk (Scandinavian sour milk), cultured cream and koumiss (a product based on mares’ milk). The generic name of fermented milk is derived from the fact that the milk for the product is inoculated with a starter culture which converts part of the lactose to lactic acid.
Insulin earlier was extracted from- a)Fishes
- b)Turkeys
- c)whales
- d)Slaughtered cattle and pigs
Correct answer is option 'D'. Can you explain this answer?
Insulin earlier was extracted from
a)
Fishes
b)
Turkeys
c)
whales
d)
Slaughtered cattle and pigs
|
|
Harshitha Dey answered |
Earlier time insulin required for controlling blood sugar was obtained from slaughtered cattle and pigs. This insulin caused allergy in diabetic patients.
First gene therapy was done for- a)Down’s syndrome
- b)Alkaptonuria
- c)ADA deficiency
- d)Cystic fibrosis
Correct answer is option 'C'. Can you explain this answer?
First gene therapy was done for
a)
Down’s syndrome
b)
Alkaptonuria
c)
ADA deficiency
d)
Cystic fibrosis
|
Shounak Nair answered |
First gene therapy was done in 1990 to a 4 year old girl with a ADA deficiency. ADA enzyme is essential for proper functioning of immune system.
Escherichia coli is used as an indicator organism to determine pollution of water with- a)Heavy metals
- b)Faecal matter
- c)Industrial effluents
- d)Pollen of aquatic plant
Correct answer is option 'B'. Can you explain this answer?
Escherichia coli is used as an indicator organism to determine pollution of water with
a)
Heavy metals
b)
Faecal matter
c)
Industrial effluents
d)
Pollen of aquatic plant
|
|
Hitakshi 💞💞 answered |
Escherichia coli is the most common indicator of water pollution. It naturally occurs in the intestines of human beings and animals. They are commonly found in sewage and if E.coli are detected in water then it indicates fecal contamination. So if E.coli are detected in drinking water it indicates a serious health risk and that water should not be used for drinking. Hence, the correct answer is option 'B'.
First artificially synthesised hormone is- a)Secretin
- b)Insulin
- c)Glucagon
- d)Renin
Correct answer is option 'B'. Can you explain this answer?
First artificially synthesised hormone is
a)
Secretin
b)
Insulin
c)
Glucagon
d)
Renin
|
|
Raza Great answered |
First artificially synthesized hormone is human insulin or humulin. It was prepared by inserting the insulin gene into a suitable vector, the E. coli bacterial cell, to produce an insulin that is chemically identical to its naturally produced counterpart. This has been achieved using recombinant DNA technology
The first transgenic cow was- a)Rosie
- b)Dolly
- c)Siana
- d)Verra
Correct answer is option 'A'. Can you explain this answer?
The first transgenic cow was
a)
Rosie
b)
Dolly
c)
Siana
d)
Verra
|
Vaibhav Basu answered |
The first transgenic cow is Rosie which produced human protein riched milk having alpha-lactalbumin, which is more balanced than conventional cow’s milk.
Biogas is produced by anaerobic breakdown of biomass of agricultural waste by methanogenic bacteria. It is a- a)One step process
- b)Two step process
- c)Three step process
- d)Multi step process
Correct answer is option 'C'. Can you explain this answer?
Biogas is produced by anaerobic breakdown of biomass of agricultural waste by methanogenic bacteria. It is a
a)
One step process
b)
Two step process
c)
Three step process
d)
Multi step process
|
Rajni Kokate answered |
Answer c is correct.. the steps are as follows
1. the facultative anaerobic microbes degrade the complex polymers to simple monomers by enzymatic action.
2. 2nd stage , monomers are converted into organic acids by microbial action and finally converted to acetic acid.
3. in 3rd stage, acetic acid is oxidized into methane by activity of anaerobic methanogenic bacteria.
1. the facultative anaerobic microbes degrade the complex polymers to simple monomers by enzymatic action.
2. 2nd stage , monomers are converted into organic acids by microbial action and finally converted to acetic acid.
3. in 3rd stage, acetic acid is oxidized into methane by activity of anaerobic methanogenic bacteria.
Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : ‘Bt’ in Bt toxin represents Bacillus thuringiensis.Reason (R) : ‘Bt’ toxin is produced by a virus.- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'A'. Can you explain this answer?
Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : ‘Bt’ in Bt toxin represents Bacillus thuringiensis.
Reason (R) : ‘Bt’ toxin is produced by a virus.
a)
Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
b)
Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
c)
Assertion (A) is true but reason (R) is false.
d)
Assertion (A) is false but reason (R) is true.
|
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Gaurav Kumar answered |
Assertion (A) is true, but reason (R) is wrong as Bt toxin is produced by a bacterium called Bacillus thuringiensis.
Formation of vinegar from alcohol is caused by- a)Bacillus subtilis
- b)Clostridium
- c)Acetobacter aceti
- d)Azotobacter
Correct answer is option 'C'. Can you explain this answer?
Formation of vinegar from alcohol is caused by
a)
Bacillus subtilis
b)
Clostridium
c)
Acetobacter aceti
d)
Azotobacter
|
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Raza Great answered |
Acetobacter is a genus of acetic acid bacteria characterized by the ability to convert ethanol to acetic acid in the presence of oxygen. Acetobacter is of particular importance commercially, because some species are used in the production of vinegar. It is economically important because it is used in the production of vinegar by converting the ethanol in wine into acetic acid
Maximum percentage of alcohol present in the product of yeast fermentation - a)Rum
- b)Gin
- c)Brandy
- d)Wine
Correct answer is option 'A'. Can you explain this answer?
Maximum percentage of alcohol present in the product of yeast fermentation
a)
Rum
b)
Gin
c)
Brandy
d)
Wine
|
Pankaj Datta answered |
Alcoholic beverages have three categories: wine, beer and distilled liquors. Beer is produced by the fermentation of grains which produces only about 3-6% alcohol. Wine is produced by the fermentation of fruit and produces wine with an alcohol content of 6-14%. A distilled beverage, spirit, liquor or hard liquor is an alcoholic beverage produced by distillation of a mixture produced from alcoholic fermentation. This process purifies it and removes diluting components like water, for the purpose of increasing its proportion of alcohol content. Brandy a spirit, is distinct as a drink from wine (due to distillation), and has a 35% of alcohol content. Other examples of common distilled beverages include vodka, gin, tequila, rum, whisky.
Rum - 37.5%-80%, Brandy - 35%-60% (usually 40%), Vodka - 35%-50%. Thus, the correct answer is option A.
Rum - 37.5%-80%, Brandy - 35%-60% (usually 40%), Vodka - 35%-50%. Thus, the correct answer is option A.
Saccharomyces cerevisiae is used in the formation of - a)Ethanol
- b)Methanol
- c)Acetic acid
- d)Antibiotics
Correct answer is option 'A'. Can you explain this answer?
Saccharomyces cerevisiae is used in the formation of
a)
Ethanol
b)
Methanol
c)
Acetic acid
d)
Antibiotics
|
|
Rocky Handsome answered |
¥¥Saccharomyces cerevisiae is famously known for its role in food production. It is the critical component in the fermentation process that converts sugar into alcohol, an ingredient shared in beer, wine and distilled beverages. It is also used in the baking process as a leavening agent; yeast releasing gas into their environment results in the spongy-like texture of breads and cakes. Because of its role in fermentation, humans have known about and used Saccharomyces cerevisiae for a long time.
---)) In a process called as fermentation, yeast feeds off sugars from their substrate and convert it to ethanol,
---)) In a process called as fermentation, yeast feeds off sugars from their substrate and convert it to ethanol,
Cry I Ab controls- a)Stem Borer
- b)Corn Borer
- c)Cotton Bollworm
- d)Root pest
Correct answer is option 'B'. Can you explain this answer?
Cry I Ab controls
a)
Stem Borer
b)
Corn Borer
c)
Cotton Bollworm
d)
Root pest
|
|
Harshitha Dey answered |
Specific Bt toxin gene is isolated from Bacillus thuringiensis and incorporated into several crop plants. The protein encoded by gene CryI Ab controls corn borer.
Biopiracy is- a)Monitoring GMO’s
- b)Commercial production of GMO’s
- c)Governing research on GMO’s
- d)Use of bio resources without proper authorization
Correct answer is option 'D'. Can you explain this answer?
Biopiracy is
a)
Monitoring GMO’s
b)
Commercial production of GMO’s
c)
Governing research on GMO’s
d)
Use of bio resources without proper authorization
|
Preeti Iyer answered |
Biopiracy is the use of biological resources without proper authorization from country or people concerned without compensate payment.
Which one of the following is a correct statement ?- a)''Bt'' in ''Bt-cotton'' indicates that it is a genetically modified organism produced through biotechnology
- b)Somatic hybridization involves fusion of two complete plant cells carrying desired genes.
- c)The anticoagulant hirudin is being produced from transgenic Brassica napus seeds.
- d)''Flavr Savr'' variety of tomato has enhanced the production of ethylene which improves its taste
Correct answer is option 'C'. Can you explain this answer?
Which one of the following is a correct statement ?
a)
''Bt'' in ''Bt-cotton'' indicates that it is a genetically modified organism produced through biotechnology
b)
Somatic hybridization involves fusion of two complete plant cells carrying desired genes.
c)
The anticoagulant hirudin is being produced from transgenic Brassica napus seeds.
d)
''Flavr Savr'' variety of tomato has enhanced the production of ethylene which improves its taste
|
|
Awantika Gupta answered |
Bt stands for Bacillus thruengensis
There is no any requirements of desired gene in somatic hybridisation. It is ultimately fusion protoplast of two different plants.
Flavr Savar tomatoes has been made to increase its market period and for delayed flowering.
so according to above statement option c is correct.
There is no any requirements of desired gene in somatic hybridisation. It is ultimately fusion protoplast of two different plants.
Flavr Savar tomatoes has been made to increase its market period and for delayed flowering.
so according to above statement option c is correct.
Chapter doubts & questions for Biotechnology & its Applications - Biology for EmSAT Achieve 2025 is part of EmSAT Achieve exam preparation. The chapters have been prepared according to the EmSAT Achieve exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for EmSAT Achieve 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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