Question

which of these infections agents do not have nucleic acid?
a viroids
b viruses
c bacteria
d prions

Answer 1

Answer:

Explanation:

Viruses are the acellular organisms. These are the microscopic structures consists of genetic material and proteins, but are not enclosed in a cell membrane. They are not considered as living beings because they need host cell machinery for replication.

Virioids are the smallest infectious agents, and are smaller than viruses with a circular RNA molecule that is not covered by a protein coat like virus. The genetic material of virioid is always RNA.

Bacteria are the unicellular prokaryotic organisms. They contain single circular DNA as the genetic material.

Answer 2

Prions are misfolded proteins with the ability to transmit their misfolded shape onto normal variants of the same protein. They characterize several fatal and transmissible neurodegenerative diseases in humans and many other animals.[3] It is not known what causes the normal protein to misfold, but the abnormal three-dimensional structure is suspected of conferring infectious properties, collapsing nearby protein molecules into the same shape. The word prion derives from "proteinaceous infectious particle". The hypothesized role of a protein as an infectious agent stands in contrast to all other known infectious agents such as viruses, bacteria, fungi and parasites, all of which contain nucleic acids.