How does a virus cause a particular disease?
To understand how viruses cause disease we must first set some ground rules about viruses. A virus is a pathogenic organism for a particular host . It depends on the virulence of the virus to actually cause a disease to a particular organism.
How are bacteria and viruses related to each other?
Antibiotics are compounds that block the growth and reproduction of bacteria. Viral Diseases Viruses produce disease by directly destroying living cells or by affecting cellular processes in ways that disrupt homeostasis. In many viral infections, viruses attack and destroy certain body cells, causing the symptoms of the disease.
Which is an example of a viral infection?
Famous viral infections include Influenza , Measles, Herpes Zoster, Hepatitis B, AIDS, Yellow Fever and the list goes on and on. To understand how viruses cause disease we must first set some ground rules about viruses. A virus is a pathogenic organism for a particular host .
What are some of the most common infectious diseases?
Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, smallpox, and Ebola. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves.
What is the difference between a virus and a disease?
A disease is a condition that impairs the body ‘s normal function resulting in the distinguishing symptoms. A virus is infective and is just as in our computers, a code that can multiply while living within the host. RNA or DNA surrounded by a coat of protein that invades, the virus cannot replicate without a host.
What do some disease causing viruses have instead of DNA?
Some disease-causing viruses have RNA instead of DNA. This type of virus is called a retrovirus. The best-known virus of this type is HIV. Some cancer-causing viruses belong to this group. In the core of the virus is RNA and an enzyme called reverse transcriptase, which is the enzyme that transcribes DNA from viral RNA.
What are 3 viral diseases?
List of nine important viral diseases seen in humans: 1. Chickenpox 2. Smallpox 3. Poliomyelitis 4. Measles 5. Mumps 6. Rabies 7. Trachoma 8. Influenza 9. Hepatitis .
How are diseases caused by a virus?
Viruses cause disease by invading host cells, then taking over the cell and causing it to create more viruses. The immune system has a variety of ways of detecting that a cell is infected by a virus.