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A prion is a small infectious particle that contains a misfolded protein. These contain no DNA or RNA. These cause Creutzfeldt-Jakob disease, Scrapie in sheep and Kuru. These are deadly and progressive nerve wasting diseases.
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.
These two are the smallest infectious particles. They are not called microorganisms because they are not alive any more than viruses are.
What else can I help you with?
What type of sound file is the smallest?
The .mp3 file format is known to be one of the smallest sound file formats due to its compression techniques that reduce the file size without compromising too much on the audio quality.
What is the smallest organism on earth?
The smallest organism on Earth is a nanobe
What is the smallest arthropod?
The fairyfly, a type of parasitic wasp, is considered the smallest arthropod. These tiny insects can measure around 0.139 mm in length.
What is the smallest packet of energy of a specific type of electro magnetic radiation?
a photon
What is the smallest insects?
fairyflies
What is the smallest type of computer?
the smallest type of computer is the palmtop computer
The least bittern is the smallest type of what bird?
The least bittern is the smallest type of heron in the Americas.
Which organism was the smallest?
the organism that was the smallest was peroxide which is a type of an enzyme
What soil type has the smallest particle?
clay has the smallest particles
What is the smallest type of a lop eared bunny rabbit?
The smallest is the mini lop.
What is most likely the smallest cell type?
In the Human Body Sperm cells would be the smallest and Smallest cell is a type of bacteria known as mycoplasma its diameter is 0.0001 mm.
What type of bird is the smallest?
hummingbird
What is the smallest type of cells?
Bacteria! :)
What is the smallest type of piranha?
there is only one type of pirana.
What is the smallest type of beef cows?
The smallest breed of beef cattle in the UK is the Dexter.
The smallest mammal of Texas?
The smallest of all the Texas mammals shrew
What is the smallest trumpet?
Probably some type of piccolo pocket trumpet.
