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Aug 25, 2018 · Virus Definition. A virus is a chain of nucleic acids (DNA or RNA) which lives in a host cell, uses parts of the cellular machinery to reproduce, and releases the replicated nucleic acid chains to infect more cells. A virus is often housed in a protein coat or protein envelope, a protective covering which allows the virus to survive between hosts.
Mar 29, 2023 · Viruses are small germs (pathogens) that can infect you and make you sick. They can infect humans, plants, animals, bacteria and fungi. Each one infects only specific types of hosts. Viral infections in humans can cause no symptoms or make you extremely ill. Types of diseases they can cause include:
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A virus is an infectious particle that reproduces by "commandeering" a host cell and using its machinery to make more viruses. A virus is made up of a DNA or RNA genome inside a protein shell called a capsid. Some viruses have an external membrane envelope. Viruses are very diverse.
- No, because they are not living things. Good question, though.
- Another aspect is that we are constantly running into new viruses. Why? Viruses can be divided into two groups: one group of viruses spreads only b...
- This is an excellent question and is the subject of current scientific research! Short answer — we don't know and the answer may be different for d...
- I think "chemical unit" is the wrong phrase to use here. A simple stone or pebble at a microscopic scale can be compared to a rough mountain range...
- It would be possible, but not practical. Having free roaming proteins in your body to attract viruses is like having pools of acid in the ocean to...
- No, viruses do *not* have that trait of living organisms - growth and development. Viruses only reproduce - if they find host (cell). Do viruses di...
- No the scientific community is split on whether a virus is alive or not but freezing a sample will actually preserve it. Researchers have found and...
- Viral infections are hard to treat because viruses live inside your body's cells. They are "protected" from medicines, which usually move through y...
- So they can attach to the host as stealthily as possible. Too large of a pathogen could alert the immune system to a threat before the virus even g...
- From What I can gather, according to this:https://www.ncbi.nlm.nih.gov/pubmed/203115, Hydrogen peroxide can make viruses inactive.
Viruses depend completely on cells (bacterial, plant, or animal) to reproduce. Some viruses have an outer envelope consisting of protein and lipid, surrounding a protein capsid complex with genomic RNA or DNA and sometimes enzymes needed for the first steps of viral replication. Classification of viruses is principally according to their genome ...
Mar 13, 2020 · At the core of a virus particle is the genome, the long molecule made of DNA or RNA that contains the genetic instructions for reproducing the virus. This is wrapped up in a coat made of protein ...
Viruses that infect bacteria are known as bacteriophage or phage. A virulent phage is one that always lyses the host cell at the end of replication, after following the five steps of replication described above. This is called the lytic cycle of replication. There are also temperate phage, viruses that have two options regarding their ...
An enveloped virus. Varicella zoster virus causes chicken pox and shingles. The viral envelope can give a virus some advantages over other capsid-only viruses. For example, they have better protection from the host's immune system, enzymes and certain chemicals. The proteins in the envelope can include glycoproteins, which act as receptor ...
