The use of transgenic animals to study how genes affect growth involves complex factors such as ________ growth factor.

[Biotechnology-and-its-Applications] [class-xii ]

• nerve
• insulin-like
• epidermal
• platelet derived
Correct Option: B  [ insulin-like ]

Remark: Transgenic animals study factors like insulin-like growth factor.

Rosie, the first transgenic cow, produced human protein-enriched milk containing the human protein ________.

[Biotechnology-and-its-Applications] [class-xii ]

• insulin
• alpha-1-antitrypsin
• alpha-lactalbumin
• growth hormone
Correct Option: C  [ alpha-lactalbumin ]

Remark: Rosie produced milk containing human alpha-lactalbumin.

Transgenic animals are made more sensitive to toxic substances for chemical safety testing, which allows us to obtain results in ________ time.

[Biotechnology-and-its-Applications] [class-xii ]

• maximum
• less
• extended
• similar
Correct Option: B  [ less ]

Remark: Increased sensitivity allows results to be obtained in less time.

The Indian Parliament recently cleared the second amendment of the Indian Patents Bill to address issues including patent terms and research and ________ initiatives.

[Biotechnology-and-its-Applications] [class-xii ]

• marketing
• development
• manufacturing
• distribution
Correct Option: B  [ development ]

Remark: The amendment addresses patent terms and research and development initiatives.

The method of propagating a large number of plants in short durations using tissue culture is known as ________.

[Biotechnology-and-its-Applications] [class-xii ]

• somatic hybridisation
• micro-propagation
• cloning
• sexual reproduction
Correct Option: B  [ micro-propagation ]

Remark: Micro-propagation is the method of mass production via tissue culture.

The first clinical gene therapy was given to treat Adenosine Deaminase (ADA) ________.

[Biotechnology-and-its-Applications] [class-xii ]

• excess
• mutation
• deficiency
• toxicity
Correct Option: C  [ deficiency ]

Remark: The first clinical gene therapy targeted ADA deficiency.

The use of traditional knowledge in developing modern applications related to bio-resources can save time, effort, and ________.

[Biotechnology-and-its-Applications] [class-xii ]

• money
• expenditure
• patents
• technology
Correct Option: B  [ expenditure ]

Remark: Traditional knowledge saves time, effort and expenditure during commercialisation.

The Bt toxin gene, cloned from Bacillus thuringiensis, provides ________ to insects.

[Biotechnology-and-its-Applications] [class-xii ]

• nutrition
• resistance
• attraction
• immunity
Correct Option: B  [ resistance ]

Remark: The Bt toxin gene provides resistance to insects.

The presence of a pathogen is normally suspected only when the pathogen has produced a disease ________.

[Biotechnology-and-its-Applications] [class-xii ]

• antigen
• antibody
• symptom
• protein
Correct Option: C  [ symptom ]

Remark: Pathogens are usually suspected only after disease symptoms appear, when concentration is high.

The pro-hormone insulin contains the C peptide, which is ________ in the mature, functional insulin molecule.

[Biotechnology-and-its-Applications] [class-xii ]

• present
• active
• removed
• doubled
Correct Option: C  [ removed ]

Remark: The C peptide is removed during maturation.