They are not alive and therefore have no cells.
None. Viruses are acellular. Many biologists do not consider viruses to be living things in part because they are acellular. Look at any phylogeny (tree of life). Viruses are not on them.
viruses are obligate intracellular entities and are considered to be acellular
No- viruses are acellular, which means that they are not made up of groups of cells, and thus do not have mitochondria present in them.
The type of cells that viruses live in are host cells. Viruses need host cells in order to reproduce or multiply.
Viruses are acellular, which means they don't have a cellular structure. As a result, they lack the majority of cell components such as organelles, ribosomes, and the plasma membrane.
Acellular particles are basically just particles that aren't made up of cells (aka non-cellular). These include viruses, prions and viroids. Because they aren't made up of cells, they aren't classified as living organisms. They are obviously neither eukaryotic or prokaryotic.
organisms, as they have been considered either as very simple microorganisms or very complex molecules
Viruses are neither prokaryotic nor eukaryotic. They are acellular entities that lack the necessary cellular machinery to carry out metabolic processes on their own.
some characteristics of a virus: - needs a host - can contain DNA or RNA - can have an envelope cell - is an acellular organism
Multi-cellular I think although I am not 100% sure. Please do not take my word for it. Hope this helps...
Viruses are not considered part of the cell theory because they are acellular entities that require a host cell to replicate.
An acellular obligatory parasite is a type of parasite that lacks cellular structure and relies on a host cell's machinery for survival and reproduction. Examples include viruses, viroids, and prions. These parasites cannot replicate or carry out metabolic functions independent of a host cell.