Question 1:

What is the purpose of genetic engineering?

Explanation: The purpose of genetic engineering is to modify the genetic material of organisms. Genetic engineering techniques allow scientists to manipulate DNA and introduce specific genes or traits into an organism's genome. Therefore, option A is correct.

Question 2:

What is recombinant DNA technology?

Explanation: Recombinant DNA technology involves the manipulation of DNA from different sources. It allows scientists to combine genetic material from different organisms to create recombinant DNA molecules with new combinations of genes. Therefore, option C is correct.

Question 3:

Which enzyme is commonly used in genetic engineering to cut DNA at specific sites?

Explanation: Restriction enzymes are commonly used in genetic engineering to cut DNA at specific sites. Restriction enzymes recognize and bind to specific DNA sequences and cleave the DNA at or near these sequences. Therefore, option C is correct.

Question 4:

What is a plasmid in the context of genetic engineering?

Explanation: In the context of genetic engineering, a plasmid refers to a small, circular DNA molecule. Plasmids are commonly used as vectors to transfer genes into host organisms in genetic engineering experiments. Therefore, option B is correct.

Question 5:

What is the purpose of a selectable marker in recombinant DNA technology?

Explanation: The purpose of a selectable marker in recombinant DNA technology is to identify transformed cells. Selectable markers, such as antibiotic resistance genes, are included in recombinant DNA molecules to allow for the selection and growth of cells that have successfully taken up the recombinant DNA. Therefore, option A is correct.