A probe used in molecular diagnosis is tagged with a ________ molecule.

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

• fluorescent
• radioactive
• enzymatic
• magnetic
Correct Option: B  [ radioactive ]

Remark: A single stranded DNA or RNA probe is tagged with a radioactive molecule.

Transgenic animals are designed to increase our understanding of how genes contribute to the development of diseases like ________.

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

• typhoid
• tuberculosis
• rheumatoid arthritis
• malaria
Correct Option: C  [ rheumatoid arthritis ]

Remark: Transgenic models exist for diseases such as rheumatoid arthritis.

Rosie produced milk containing the human alpha-lactalbumin, making it nutritionally a more balanced product for human ________ than natural cow-milk.

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

• adults
• babies
• teenagers
• elderly
Correct Option: B  [ babies ]

Remark: Rosie's milk was nutritionally a more balanced product for human babies.

The patent granted to the American company on Basmati rice in 1997 extended to functional ________, restricting others from selling similar rice.

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

• analogs
• copies
• equivalents
• varieties
Correct Option: C  [ equivalents ]

Remark: The patent extended to functional equivalents.

Traditional knowledge related to bio-resources can be exploited to develop modern applications, saving time, effort, and ________ during commercialisation.

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

• capital
• expenditure
• labour
• research
Correct Option: B  [ expenditure ]

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

Developing and underdeveloped countries are rich in biodiversity and traditional knowledge, contrasting with industrialised nations which are financially ________.

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

• poor
• rich
• average
• developing
Correct Option: B  [ rich ]

Remark: Industrialised nations are rich financially but poor in biodiversity.

The purpose of GEAC is to make decisions regarding the validity of GM research and the ________ of introducing GM-organisms for public services.

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

• cost
• patenting
• safety
• marketing
Correct Option: C  [ safety ]

Remark: GEAC makes decisions regarding the validity of GM research and the safety of introducing GM-organisms.

The initial success of the Green Revolution in tripling food supply was mainly due to better management practices and the use of ________.

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

• tissue culture
• agrochemicals
• organic farming
• genetic engineering
Correct Option: B  [ agrochemicals ]

Remark: Increased yields were mainly due to better management practices and use of agrochemicals.

The naked protoplasts isolated from plant cells are surrounded only by a ________.

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

• cell wall
• nucleus
• vacuole
• plasma membrane
Correct Option: D  [ plasma membrane ]

Remark: Naked protoplasts are surrounded only by plasma membranes after cell wall digestion.

Bt cotton, Bt corn, rice, tomato, potato and ________ are examples of plants where Bt toxin genes have been incorporated.

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

• wheat
• soyabean
• barley
• sugarcane
Correct Option: B  [ soyabean ]

Remark: Soyabean is listed among the examples of Bt crops.