They don't, for the most part, that is.
Scientists argue over whether or not viruses are alive because some believe that they have all the qualities you need to be considered alive, which are....
* They reproduce
* They obtain and use energy
* They grow and develop
* They respond to the environment
The only thing that is different is that they cannot use their genetic material on their own. They need a host, a cell, to reproduce. So therefore, scientists continue to argue on whether viruses are alive, or not. :D
Viruses either have a strand of DNA or RNA not both like living organisms. They need a host (you and me) in order to replicate.
Biologists consider dormant virions to be non-living because they must obtain a host to function and replicate themselves. However, active viruses are considered to be living, by most scientists.
There actually living
viruses are non living and bacteria are living organisms
They don't. They are non-living.
All animals are living, but viruses are classified as non-living organisms.
viruses are connecting link between living and non-living, as they show only one character of living biengs i.e. reproduction but that too is in inside living host cell otherwise they are consider as nonlivings
Biologists consider viruses to be non-living because they lack the cellular structure and metabolic processes characteristic of living organisms. Viruses cannot reproduce independently; they require a host cell to replicate and carry out their life cycle. Additionally, they do not exhibit growth, respond to stimuli, or maintain homeostasis, which are key features of life. As a result, viruses are often classified as complex molecules or biological entities rather than living organisms.
Mumps are caused by a virus so it depends what you consider a microbe. Some microbiologists consider viruses to be microbes and some don't because they are technically non-living.
Many scientists consider viruses to be non living because each and every living organism must carry out these 7 life processes for it to be considered living: Movement, Reproduction, Sensitivity, Growth, Respiration, Excretion and Nutrition. Viruses do all of these things except reproduction, which they cannot do. Instead, they multiply by using other living organism's cells which has caused a lot of debate over whether that counts as reproduction in the scientific community.
viruses are non-living yet they can grow and spread through bodies
They don't have a Nucleus.