Viral Diseases analyzes the various clinical disorders and infections in humans caused by pathogenic viruses, such as influenza, dengue, and coronaviruses.
Correct Answer:
(D)
Virus infecting bacterium
A virus infecting bacterium is called bacteriophage. It infects and replicated within bacteria and archaea. Like other virus es, its outer covering is made up of protein and nucleic acid (DNA or RNA) is present in it.
Ques: 2
Which of the following statements is/are correct?
Viruses lack enzymes necessary for the generation of energy.
Viruses can be cultured in any synthetic medium.
Viruses are transmitted from one organism to another by biological vectors only.
Select the correct answer using the codes given below:
Correct Answer:
(A) Only 1
A virus is a small infectious agent that replicates only inside the living cell of other organisms. Energy producing system is absent in them as viruses lack enzymes necessary for the generation of energy. Viruses exist in the form of independent particles. The viral particles also known as virions. Viruses are transmitted from one organism to another by various means e.g., by air, water, food, insects, contact etc.
Ques: 3
Consider the following statements:
Dengue is a protozoan disease transmitted by mosquitoes.
Retro-orbital pain is not a symptom of dengue.
Skin rash and bleeding from nose and gums are some of the symptoms of dengue.
Which of the statements given above is/are correct?
Correct Answer:
(B) 3 only
Dengue is a viral disease transmitted by mosquitoes. Dengue fever is a painful, debilitating disease caused by viruses. Symptoms may include sudden high fever, severe headaches, pain behind the eyes (retro-orbital pain), severe joint and muscle pain, nausea, vomiting, skin rash and bleeding from nose and gums. These symptoms appear three to four days after the fever.
Ques: 4
Which one of the following diseases is not transmitted by tiger mosquitoes?
Correct Answer:
(D)
Japanese Encephalitis
Aedes albopictus also known as tiger mosquito or ‘forest mosquito’ is native to the tropical and subtropical areas of Southeast Asia. Aedes albopictus is an epidemiologically important factor for the transmission of many viral pathogens, including the yellow fever virus, dengue virus, and chikungunya virus, etc. Japanese encephalitis is transmitted by Culex species of mosquito.
Ques: 5
Of the following which set includes all viral diseases?
Correct Answer:
(B) Mumps, Rabies, Herpes
Common viral diseases include: Chicken pox, Rabies, Flu (influenza), Human immunodeficiency virus (HIV/AIDS) Mumps, measles, poliomyelitis etc.