Genetic Engineering and Biotechnology

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What is the primary source of Taq polymerase, an enzyme used in PCR?

Molecular scissors

Ligase-producing organism

Heat-resistant virus

Thermophilic bacteria (correct)

What is the purpose of ligase in molecular cloning?

To visualize DNA

To cut DNA molecules

To prevent self-ligation

To repair the phosphodiester backbone of DNA (correct)

What is the primary function of molecular scissors in genetic engineering?

To visualize DNA

To cut DNA molecules (correct)

To prevent self-ligation

To join DNA molecules

Which stage of PCR requires a high temperature?

Denaturing Signup and view all the answers

What is the potential benefit of genetically modified crops?

To enhance all forms of human agriculture Signup and view all the answers

What is the purpose of phosphatase in genetic engineering?

To prevent self-ligation Signup and view all the answers

What is the primary goal of gene therapy?

To cure hereditary diseases Signup and view all the answers

What is the significance of E. coli in biotechnology?

It produces recombinant insulin Signup and view all the answers

What is the potential risk of genetic engineering in agricultural biotechnology?

It can lead to the flow of genes from modified plants to natural plants, threatening biodiversity Signup and view all the answers

What is the primary function of the pancreas?

To secrete insulin Signup and view all the answers

What is the ethical principle demonstrated by the doctor in the hospital scenario?

Beneficence Signup and view all the answers

What is the bioethical principle demonstrated by the statement about the environment?

Environmental ethics Signup and view all the answers

What is the primary concern associated with the use of terminator technology?

It could lead to the killing of natural populations through outcrossing Signup and view all the answers

What is the primary purpose of bioreactors?

To provide optimal conditions for cell growth and chemical production Signup and view all the answers

What is the main goal of gene therapy?

To cure genetic defects in embryos Signup and view all the answers

What is the benefit of Golden Rice?

It is rich in beta-carotene Signup and view all the answers

What is the first stage of gene therapy?

Lymphocytes culture outside the body Signup and view all the answers

What is an alternative method to cure Adenosine deaminase deficiency?

Bone marrow transplantation Signup and view all the answers