Tag: making use of enzymes

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Multiple choice biotechnology and genetic engineering genetic technology genetic engineering biology making use of enzymes

Introduction of food plants developed by genetic engineering is not desirable because

  1. these products are less tasty as compared to the already existing products

  2. this method is costly

  3. economy of developing countries may suffer

  4. there is danger of entry of viruses and toxins with introduced crop
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

While many concerns exist, the high cost of research, development, and patenting associated with genetic engineering is a primary economic barrier to its widespread adoption in developing nations.

Multiple choice biotechnology and genetic engineering genetic technology genetic engineering biology making use of enzymes

Genetic engineering is possible because

  1. the phenomenon of transduction in bacteria is well understand.

  2. we can see DNA by electron microscope

  3. we can cut DNA at specific sites by endonucleases like DNAase 1

  4. restriction endonucleases purified from bacteria can be used in vitro
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Genetic engineering relies on the ability to manipulate DNA precisely. Restriction endonucleases act as molecular scissors that cut DNA at specific sequences, allowing for the insertion of foreign genes.

Multiple choice biotechnology and genetic engineering genetic technology genetic engineering biology making use of enzymes

Plasmid is boon to biotechnology (with reference to production of insulin).

  1. True

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

Plasmid is boon to biotechnology. By the used of plasmids of E. coli, it is possible to produce insulin polypeptide chains separately. This has enable the artificial production of mature human insulin commercially. In this, genome corresponding to the polypeptide chain A and B of insulin are synthesized in vitro. These are then introduced into plasmid of E.coli. Under selected medium, the polypeptides A and B are expressed highly. These are extracted and combined by creating disulphide bridge to form artificial human insulin.

Thus, the correct answer is 'True.'

Multiple choice biotechnology and genetic engineering genetic technology genetic engineering biology making use of enzymes

Genetically engineered insulin is considered better for human diabetic patients over that isolated from animals because __________________.

  1. Insulin expressed in bacterial cells are low molecular weight.

  2. Insulin from other animals are not pure

  3. Genetically engineered insulin will not elicit immune response in human body.

  4. Genetically engineered insulin is easily transported through blood stream.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Answer is option C i.e. "Genetically engineered insulin will not elicit immune response in human body"

Insulin from animal source causes patients to develop allergy or other types of reactions. Insulin produced using rDNA techniques is directly assembled into mature form and hence are more safe.
Genetically engineered insulin do not induce unwanted immunological responses and also do not elicit an immune response in the human body.

Multiple choice biotechnology and genetic engineering genetic technology genetic engineering biology making use of enzymes

Transgenic plants are developed by

  1. clone and genetically modified genes

  2. introduction of foreign genes

  3. genetic engineering

  4. purified genes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transgenic plants are organisms that have had their genetic material altered by the introduction of foreign genes from another species using genetic engineering techniques.

Multiple choice biotechnology and genetic engineering genetic technology genetic engineering biology making use of enzymes

Bacillus thuringiensis (Bt) strains have been used for designing novel

  1. bio-fertilizers

  2. bio-metallurgical techniques

  3. bio-mineralization processes

  4. bio-insecticidal plants
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bacillus thuringiensis (Bt) produces proteins that are toxic to specific insect pests, which is why it is used to create bio-insecticidal crops.

Multiple choice biotechnology and genetic engineering genetic technology genetic engineering biology making use of enzymes

Which of the following is not a correct statement?

  1. "Bt" in "Bt-cotton" indicates that it is a genetically modified organism produced through biotechnology

  2. Somatic hybridization involves fusion of two complete plant cells carrying desired genes

  3. The anti-coagulant hirudin is being produced from transgenic Brassica napus seed

  4. "Flavr Savr" variety of tomato has enhanced the Production of ethylene which improves its taste
Reveal answer Fill a bubble to check yourself
A,B,D Correct answer