The toxin produced by B. thuringiensis is specifically an insecticidal ________.

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

• lipid
• carbohydrate
• protein
• nucleic acid
Correct Option: C  [ protein ]

Remark: The crystals contain a toxic insecticidal protein.

The consequence of the parasite not surviving in a transgenic host expressing specific interfering RNA is that the transgenic plant gets itself protected from the ________.

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

• fungus
• virus
• nematode
• insect
Correct Option: C  [ nematode ]

Remark: This was the outcome of the RNAi strategy against the nematode Meloidegyne incognitia.

Recombinant DNA technology has enabled the mass production of safe and more effective therapeutic ________.

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

• chemicals
• drugs
• vaccines
• antibodies
Correct Option: B  [ drugs ]

Remark: Recombinant DNA technology has made immense impact by enabling mass production of safe and more effective therapeutic drugs.

The management of adult-onset diabetes is possible by taking ________ at regular time intervals.

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

• glucose
• insulin
• glucagon
• antibiotics
Correct Option: B  [ insulin ]

Remark: Management of adult-onset diabetes is possible by taking insulin at regular time intervals.

The process of correcting a genetic defect in gene therapy involves delivery of a normal gene into the individual or embryo to take over the function of and compensate for the non-functional ________.

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

• protein
• gene
• cell
• enzyme
Correct Option: B  [ gene ]

Remark: Correction involves delivery of a normal gene to compensate for the non-functional gene.

PCR is a powerful technique used to identify many genetic ________.

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

• mutations
• proteins
• disorders
• antibodies
Correct Option: C  [ disorders ]

Remark: PCR is a powerful technique to identify many other genetic disorders.

In molecular diagnosis, a single stranded DNA or RNA probe is allowed to ________ to its complementary DNA in a clone of cells.

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

• replicate
• translate
• hybridise
• ligate
Correct Option: C  [ hybridise ]

Remark: The probe is allowed to hybridise to its complementary DNA.

Transgenic animals can be designed to allow the study of how genes affect the normal functions of the body and its ________.

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

• reproduction
• evolution
• development
• respiration
Correct Option: C  [ development ]

Remark: Transgenic animals allow the study of how genes affect normal functions and development.

Transgenic models exist for many human diseases such as ________.

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

• polio
• cystic fibrosis
• typhoid
• malaria
Correct Option: B  [ cystic fibrosis ]

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

Transgenic animals that produce useful biological products can be created by introducing the portion of DNA which codes for a particular ________.

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

• vitamin
• gene
• antibody
• product
Correct Option: D  [ product ]

Remark: Transgenic animals are created by introducing DNA coding for a particular product (like a human protein).