Viruses are not considered alive because they lack the ability to reproduce unless they have a host to reproduce for them. When viruses are not attache to a living cell they lose all living characteristics.
metabolism
because of over population and because of lack of space in China.
Some people argue that viruses are not alive because they lack any form of energy, carbon metabolism, and they canâ??t replicate or evolve. Therefore, they do not exhibit the same set of characteristics of all living things.
A. Michellangelos work on the ceiling of the Sistine Chapel
Reticulate bodies are often termed "energy parasites" because they lack an enzyme system for producing ATP.
No
Yes, and so is your lack of such knowledge!
Viruses are considered to be non-living things, and are capable of causing disease. The reason viruses are not considered living is because they lack many of the characteristics of life until they infect a host cell.
Because of lack of oxygen and sunlight.
D. A and B They lack vascular tissue in their "roots" and "leaves" and they possess rhizoids.
Viruses are considered to be non-living things, and are capable of causing disease. The reason viruses are not considered living is because they lack many of the characteristics of life until they infect a host cell.
Mycoplasma is a genus of bacteria that lack a cell wall. They can be parasitic or saprotrophic, with some considered to be pathogenic in humans.