Question

What advantageous uses have viruses been shown to have?

a) The activities of viral genes mimic those of host genes so they are useful for studying
mechanisms of DNA replication and gene expression in their much more complex hosts.
b) They can be used as a means to introduce foreign genes into human cells, which may serve as
a basis for treatment of human diseases by gene therapy.
c) Insect-killing viruses may play an increasing role in the war against insect pests.
d) Bacteria-killing viruses may play an increasing role in the war against bacterial pathogens.
e) All of these are correct.

Answer 1

Viruses have beneficial uses including facilitating gene therapy by serving as vectors, aiding in biological research, offering alternatives to antibiotics through bacteriophages, providing environmentally friendly pest control, and being integral in the development of vaccines. The correct option is E.

Step-by-step explanation:

Viruses are not solely pathogenic entities but have been shown to have several advantageous uses. One significant application is in the field of gene therapy, where viral vectors are used to introduce foreign genes into human cells, potentially treating a range of diseases caused by genetic mutations.

Moreover, viruses can serve as tools for basic scientific research, advancing our understanding of molecular biology through studies of DNA replication, gene expression, and host-virus interactions.

Another area where viruses show potential is in agriculture and public health. Certain viruses, known as bacteriophages, are effective in targeting and destroying antibiotic-resistant bacteria, offering a promising alternative to conventional antibiotics. Similarly, insect-killing viruses might offer environmentally friendly pest control options, reducing the need for chemical pesticides.

In complementary fashion, viruses also contribute to preventive medicine, particularly through the development of vaccines. Vaccines harness the immunogenic properties of viruses to stimulate the body's immune system, providing protection against various viral diseases without causing the severe effects associated with actual infections.