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Prions are the smallest known infectious agents.

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Q: Viruses are the smallest known infectious agents?
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The only known infectious agents that lack genetic material are A. certain viruses. B. prions. C. viroids. D. none of the above D?

It is B Prions

Is the flu virus is name for the disease it causes?

The flu viruses cause the infectious respiratory disease known as influenza.

What causes MALT lymphomas outside the stomach?

It is not known if infectious agents also cause MALT lymphomas outside of the stomach.

Complete living unit?

The smallest complete living unit known to science is a single cell. The smallest single celled organisms known, mycoplasma, are not much bigger than the very largest viruses. Viruses are not technically considered to be living organisms by most scientists.

What did Wendell Stanley's work suggest about the nature of viruses?

Stanley's work seemed to indicate that the infectious agent in TMV was a protein, in spite of the fact that TMV was known to contain RNA

What is the tiniest pathogen?

prion - it is a single misshaped protein molecule without any genetic material, but it can cause other protein molecules to become misshapen too. Prions have been found to cause several degenerative neurological diseases like Alzheimer's disease, Creutzfeldt-Jakob disease, mad cow disease, chronic wasting disease, etc. (all transmissible spongiform encephalopathies in various mammalian species)

What are the causative agents of AIDS?

Human immunodeficiency virus (HIV) is the causative agent for AIDS. The most common type is known as HIV-1 and is the infectious agent that has led to the worldwide AIDS epidemic

Do viruses have any known predators?

Since viruses are nonliving, they have no known predators.

What represents a difference between viruses and viroids?

Viroids are plant pathogens that consist of a short stretch (a few hundred nucleobases) of highly complementary, circular, single-stranded RNA wthout the protein coat that is typical for viruses. The smallest discovered is a 220 nucleobase scRNA (small cytoplasmic RNA) associated with the rice yellow mottle sobemovirus (RYMV). In comparison, the genome of the smallest known viruses capable of causing an infection by themselves are around 2 kilobases in size. The human pathogen hepatitis D issimilar to viroids.A virus is a small infectious agentthat can replicate only inside the living cells of organisms. Viruses infect all types of organisms, from animals and plants to bacteria and archaea.

Is polio infectious?

Yes, poliomyelitis, known as polio, is due to a virus and is considered an infectious disease.

What is infectious disease outbreak?

It is known as an Epidemic

Which part of Dalton's theory did Thomson's findings dispute?

The atom is the smallest known particle.