Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Biotechnology and its Applications

Question:

Which one of  the following is incorrectly  matched option :

Column 1 Column 2
1) ELISA a) Antigen-antibody interaction
2) Bt cotton b) Bacillus thuringiensis toxin gene
3) Golden rice  c) Vitamin 'A ' enriched
4)  Rosie d) First transgenic sheep

 

Options:

2

4

1

3

Correct Answer:

4

Explanation:

The correct answer is Option (2)-  4. Rosie - d) First transgenic sheep

In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk (2.4 grams per litre). The milk contained the human alpha-lactalbumin and was nutritionally a more balanced product for human babies than natural cow-milk.

ELISA is based on the principle of antigen-antibody interaction. Infection by pathogen can be detected by the presence of antigens (proteins, glycoproteins, etc.) or by detecting the antibodies synthesised against the pathogen.

Bacillus thuringiensis (Bt) is a bacterium that produces proteins called Bt toxins, which are toxic to certain insects. These toxins have been utilized in biotechnology to create pest-resistant plants, reducing the need for chemical insecticides. One such example is Bt cotton, where the Bt toxin gene is cloned from the bacterium and expressed in the plant.

Golden rice is a genetically modified rice variety that has been engineered to produce beta-carotene, which is a precursor of vitamin A. Vitamin A deficiency is a significant health issue in many developing countries and can lead to blindness, particularly in children. Golden rice was developed to address this problem by providing a dietary source of vitamin A, which is essential for vision and immune function.