yes
Viroids are infectious, circular RNA molecules that are even smaller than viruses. They lack a protein coat and rely on host cell machinery for replication. Viroids can cause disease in plants, interfering with their normal growth and development.
A plant pathologist discovered an infectious RNA particle smaller than a virus that causes diseases in plants. He called it a viroid. Millions each year are lost by these viroids. These contain only RNA.
A prion or proteinacious infections particle is simply a protein. They exist as normal proteins in our brain termed PrP, however in certain ecepalopathy diseases these prions are thought to alter shape to a more resistant tertiary protein structure (more beta pleated sheets than alpha helices) and are termed PrPsc. It is theorised the PrPsc are able to convert normal prions to pathogenic ones. Mode of transmission between organisms is unknown as the blood brain barrier should prevent them from getting to the brain of the infected organism. A viriod however is a naked strand of DNA/RNA that causes disease mainly in plants. It does this by cell infection, and then expression of its own genetic code, hijacking the cellular protein synthesis apparatus of the cell to copy itself.
Not intentionally, for when they do - the virus eats them.
Virus (notable members: HIV, Influenza (flu)); bacteria (NM: E.Coli, salmonela); Fungi (NM: ringworm, athlete's foot); Prion (NM: mad cow disease); Protists (NM: Malaria, giardia)----- I know of two more; plants (NM: pollen); Pathogen (NM: tapeworm)
no virus is smaller than virus.
Viroids are infectious, circular RNA molecules that are even smaller than viruses. They lack a protein coat and rely on host cell machinery for replication. Viroids can cause disease in plants, interfering with their normal growth and development.
A plant pathologist discovered an infectious RNA particle smaller than a virus that causes diseases in plants. He called it a viroid. Millions each year are lost by these viroids. These contain only RNA.
I think currently the smallest living organisms are thought to be "viroids", which are smaller than viruses. Scientists are still figuring out exactly what viroids are, and do, but they are able to replicate, which means they are life.
Viroids are smaller than viruses and cannot be seen using a light microscope as they lack a protein coat. They are typically detected using molecular techniques like PCR.
A prion or proteinacious infections particle is simply a protein. They exist as normal proteins in our brain termed PrP, however in certain ecepalopathy diseases these prions are thought to alter shape to a more resistant tertiary protein structure (more beta pleated sheets than alpha helices) and are termed PrPsc. It is theorised the PrPsc are able to convert normal prions to pathogenic ones. Mode of transmission between organisms is unknown as the blood brain barrier should prevent them from getting to the brain of the infected organism. A viriod however is a naked strand of DNA/RNA that causes disease mainly in plants. It does this by cell infection, and then expression of its own genetic code, hijacking the cellular protein synthesis apparatus of the cell to copy itself.
No, a virus is much smaller than bacteria.
Not intentionally, for when they do - the virus eats them.
Virus (notable members: HIV, Influenza (flu)); bacteria (NM: E.Coli, salmonela); Fungi (NM: ringworm, athlete's foot); Prion (NM: mad cow disease); Protists (NM: Malaria, giardia)----- I know of two more; plants (NM: pollen); Pathogen (NM: tapeworm)
Yes, viruses are smaller than bacteria.
no almost nothing is smaller than bacterium
No. It is larger by 2x.