Over ________ per cent of all existing transgenic animals are mice.

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

• 50
• 75
• 95
• 80
Correct Option: C  [ 95 ]

Remark: Over 95 per cent of all existing transgenic animals are mice.

Transgenic animals are specifically designed to study complex factors involved in growth, such as ________-like growth factor.

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

• epithelial
• insulin-like
• fibroblast
• nerve
Correct Option: B  [ insulin-like ]

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

Transgenic models exist for human diseases such as cancer, cystic fibrosis, rheumatoid arthritis, and ________.

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

• Polio
• Hepatitis
• Alzheimer’s
• Diabetes
Correct Option: C  [ Alzheimer’s ]

Remark: Transgenic models exist for Alzheimer’s, cancer, cystic fibrosis, and rheumatoid arthritis.

The human protein ________ is produced by transgenic animals and used to treat emphysema.

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

• human alpha-lactalbumin
• alpha-1-antitrypsin
• ADA enzyme
• proinsulin
Correct Option: B  [ alpha-1-antitrypsin ]

Remark: Alpha-1-antitrypsin is a human protein produced by transgenic animals to treat emphysema.

Attempts are being made to treat phenylketonuria (PKU) and ________ using transgenic animals to produce biological products.

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

• Alzheimer's
• cystic fibrosis
• cancer
• diabetes
Correct Option: B  [ cystic fibrosis ]

Remark: Similar attempts are being made for treatment of phenylketonuria (PKU) and cystic fibrosis.

Rosie, the first transgenic cow, was produced in the year ________.

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

• 1983
• 1990
• 1997
• 2005
Correct Option: C  [ 1997 ]

Remark: The first transgenic cow, Rosie, was produced in 1997.

Rosie produced human protein-enriched milk containing ________ grams per litre of human protein, specifically alpha-lactalbumin.

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

• 1.2
• 2.4
• 3.6
• 4.8
Correct Option: B  [ 2.4 grams ]

Remark: Rosie produced milk containing 2.4 grams per litre of human protein.

Transgenic mice are being developed to test the safety of the ________ vaccine, potentially replacing monkeys.

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

• measles
• HPV
• polio
• smallpox
Correct Option: C  [ polio ]

Remark: Transgenic mice are being used to test the safety of the polio vaccine.

Chemical safety testing using transgenic animals is also known as ________/safety testing.

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

• medical
• toxicity
• biological
• drug
Correct Option: B  [ toxicity ]

Remark: This process is known as chemical safety testing or toxicity/safety testing.

Genetic modification of organisms can have ________ results when introduced into the ecosystem.

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

• consistently beneficial
• well-defined
• predictable
• unpredictable
Correct Option: D  [ unpredictable ]

Remark: Genetic modification can have unpredictable results when such organisms are introduced into the ecosystem.