Tag: transgenic organisms

Quizzes (0) Questions (210)

Questions Related to transgenic organisms

Multiple choice zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

Transgene is a foreign gene artificially transferred into an organism

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A transgene is a gene or genetic material that has been transferred naturally, or by any of a number of genetic engineering techniques from one organism to another. The introduction of a transgene (called transgenesis) has the potential to change the phenotype of an organism.

So, the statement is 'True'.

Multiple choice zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

Triticale is produced by the crossing of

  1. wheat and rye

  2. wheat and maize

  3. wheat and barlye

  4. rye and maize
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Triticale is a crop species (cereal grain) formed as a result of cross between wheat (Triticum) and rye (Secale). It combines the yield potential and grain quality of wheat with the disease and environmental tolerance (including soil conditions) of rye. So, the correct option is 'wheat and rye'.

Multiple choice zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

Flavr Savr is a variety of

  1. Tomato

  2. Tobacco

  3. Mustard

  4. Cotton
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Flavr Savr (also known as CGN-89564-2), is a genetically modified tomato, that was the first commercially grown genetically engineered food to be granted a license for human consumption. It was produced by the Californian company Calgene.

Multiple choice zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

Genetically Modified Organisms (GMO) are developed by rDNA technology and genetic engineering. They are useful for

  1. Enhancing food nutritional value

  2. Reduction in the post-harvest losses

  3. Increasing the tolerance power of crops against the abiotic stresses

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Genetically modified organisms (GMO) are those organisms whose genetic material has been altered using techniques in genetics generally known as recombinant DNA.
They have many applications like:
Genetically modified organisms can be used to produce genetically modified food which enhances the nutrient value of food. 
GMOs help to increase yields by protecting crops from pests, weeds thereby reducing the post-harvest losses.
Genetically modified crops is emerging as an effective measure to counteract the negative impact of abiotic stress.
Thus, the correct answer is 'All of the above'.

Multiple choice zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

Which of the following risks are associated with genetically modified foods?

  1. Toxicity in human beings

  2. Allergic reactions in human beings

  3. Antibiotic resistance in microorganisms present in alimentary canal

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Genetically modified crops are the plants whose DNA has been modified by using genetic engineering methods to introduce a new tait in the plants. But several studies indicate serious health risks associated with GMO's including infertility, immune problems, allergic reactions, changes in the system of GIT. The toxins introduced in plants cause allergic reactions in humans , even they move to the GIT of humans or the foetus in pregnant mothers. GMOs also fails the allergic tests because their proteins have some properties similar to allergens. They also reduces our immunity level. 

So, the correct option is 'Option D' .

Multiple choice zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

Heavy metals like nickel can be removed from water with the help of

  1. Filtration

  2. Carbomethylchitosan

  3. Biological treatment

  4. Ultrafiltration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The conventional methods which are commonly used for the removal of nickel from water are physico-chemical methods, such as chemical coagulation, chemical oxidation or reduction, active carbon adsorption, filtration, ion exchange and membrane technologies. Nickel behaves the same as iron, and can be removed by a strong acid cation exchanger. Activated-carbon filtration can be used to reduce the amount of nickel in drinking water, but may not remove it all. Reverse osmosis will remove 97 - 98% of the nickel from drinking water.

So, the correct answer is option A.

Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

The transgenic animals are those which have 

  1. Foreign RNA in all its cells

  2. Foreign DNA in some of its cells

  3. Foreign DNA in all its cells

  4. Both A and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Transgenic organism is one that has become transformed following the introduction of novel genes into its genome. It is most frequently achieved by integration of doned DNA sequences following their injection into the fertilised egg. This fertilised egg divides mitotically to form the whole organism so that all the cells of the organism will carry the transferred genes. The transferred genes are known as transgenes.
So, the correct answer is 'Foreign DNA in all its cells'.
Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

Which of the following is not used to transfer the recombinant DNA into the host?

  1. Micro-injection method

  2. Gene gun method

  3. Bioreactors

  4. Disarmed pathogen vectors
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Bioreactors are considered as vessels in which raw materials are biologically converted into specific products by microbes, plant and animal cells or their enzymes. To produce large quantities of these products, bioreactors are used where large volumes (100-1000 litres) of culture can be processed. Bioreactor provides the optimal conditions for obtaining the desired product by providing optimum growth conditions such as temperature, pH, substrate, vitamins, oxygen and salts.
So, the correct answer is 'Bioreactors'.
Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

Read the following four statements (A-D).

A. The first transgenic buffalo, Rosie produced milk which was human alpha-lactalbumin enriched.
B. Restriction enzymes are used in isolation of DNA from other macromolecules.
C. Downstream processing is one of the steps of rDNA technology.
D. Disarmed pathogen vectors are also used in transfer of rDNA into the host.

Which of the two statements have mistakes?

  1. B and C

  2. C and D

  3. A and C

  4. A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement A is incorrect because Rosie was a transgenic cow, not a buffalo. Statement B is incorrect because restriction enzymes are used to cut DNA at specific sites, not for the isolation of DNA from other macromolecules (which is done via chemical extraction).