Question: Which Of The Following Are True Of Viral Infection?

What is types of virus?

The main types of computer virus are as follows:Boot Sector Virus.Direct Action Virus.Multipartite Virus.Polymorphic Virus.Resident Virus.File Infector Virus..

What are viral infections?

A viral infection is a proliferation of a harmful virus inside your body. Viruses cannot reproduce without the assistance of a host. Viruses infect a host by introducing their genetic material into the cells and hijacking the cell’s internal machinery to make more virus particles.

What is an essential component of all viruses?

All viruses contain the following two components: 1) a nucleic acid genome and 2) a protein capsid that covers the genome. Together this is called the nucleocapsid. In addition, many animal viruses contain a 3) lipid envelope. The entire intact virus is called the virion.

How do you fight a viral infection?

How are viral fevers treated?taking over-the-counter fever reducers, such as acetaminophen or ibuprofen, to reduce a fever and its symptoms.resting as much as possible.drinking plenty of fluids to stay hydrated and replenish fluids lost while sweating.More items…

What are true about viruses?

In fact, viruses should not even be considered organisms, in the strictest sense, because they are not free-living—i.e., they cannot reproduce and carry on metabolic processes without a host cell. All true viruses contain nucleic acid—either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid)—and protein.

What is a virus in simple terms?

A virus is a microscopic parasite that can infect living organisms and cause disease. It can make copies of itself inside another organism’s cells. Viruses consist of nucleic acid and a protein coat. Usually the nucleic acid is RNA; sometimes it is DNA. … Viruses are so much smaller than bacteria.

What are some Lysogenic viruses?

Streptococcus pyogenes, produce a pyrogenic exotoxin, obtained by lysogenic conversion, which causes fever and a scarlet-red rash, scarlet fever. Certain strains of Clostridium botulinum, which causes botulism, express botulinum toxin from phage-tranduced genes.

What is the fastest way to get rid of a viral infection?

But you can find relief faster with these smart moves.Take it easy. When you’re sick, your body works hard to fight off that infection. … Go to bed. Curling up on the couch helps, but don’t stay up late watching TV. … Drink up. … Gargle with salt water. … Sip a hot beverage. … Have a spoonful of honey.

What are 5 characteristics of a virus?

CharacteristicsNon living structures.Non-cellular.Contain a protein coat called the capsid.Have a nucleic acid core containing DNA or RNA (one or the other – not both)Capable of reproducing only when inside a HOST cell.

How long are viruses contagious for?

Most people will be infectious for around 2 weeks. Symptoms are usually worse during the first 2 to 3 days, and this is when you’re most likely to spread the virus.

What best describes a virus?

The option that best describes viruses is: Viruses are nonliving infectious agents. Viruses cannot replicate on their own and they need a host cell in order to survive. Antibiotics kill bacteria but not viruses.

What is the benefit for a virus to be a temperate or lysogenic virus?

What is the benefit, for a virus, to be a temperate or lysogenic virus? A single infection event can produce millions of new viral particles instead of hundreds of viral particles. lytic or virulent. controls both the lytic genes on the prophage and prevents an incoming virus of the same type.

What are 3 facts about viruses?

Characteristics of VirusesThey do not have an organized cell structure.They have no cell nucleus.They typically have one or two strands of DNA or RNA.They are covered with a protective coat of protein called the CAPSID.They are inactive when not inside a living cell, but are active when inside another living cell.

How do viruses make copies of themselves?

During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it. During uncoating, replication, and assembly, the viral DNA or RNA incorporates itself into the host cell’s genetic material and induces it to replicate the viral genome.

How do doctors know if it’s viral or bacterial?

Diagnosis of Bacterial and Viral Infections But your doctor may be able to determine the cause by listening to your medical history and doing a physical exam. If necessary, they also can order a blood or urine test to help confirm a diagnosis, or a “culture test” of tissue to identify bacteria or viruses.