Viruses have no self metabolism nor ability to reproduce autonomously, but bacteria can reproduce, grow and metabolize without the help of another cell.
An easy way to think about it is this: If all life in the Universe were to die, but bacteria were left in tact (alive), they would survive and continue to live and reproduce. If bacteria were wiped out as well as all other life, but viruses were unaffected (left in tact), they would all disintegrate/decay (fall apart) fairly quickly and there is no conceivable way they could reproduce.
This is because the virus isn't alive, it is just a collection of molecules that living things will "copy" (reproduce) if they come into contact with them, due to the particular interactions the living cell has with those viral molecules.
To be able to study all the living things in our universe, we need a way to group or classify them together. Scientists divided all things into living and non-living. Then they divided those (e.g. animal kindom and plant kingdom, then continued dividing them on how the items were seimilar or dissimilar).
scientist classify parts of an ecosystem by biotic things (living things) and abiotic things ( nonliving things).
Are you sure this is true? Because if it is then other stuff will happen.
Bacteria are able to reproduce on their own while viruses need a host to "hijack" so they can reproduce. Bacteria have metabolisms, catabolic and anabolic biochemical reactions going on in their cells all the time. Viruses do not. Bacteria can grow in size to a certain extent while viruses do not change in this regard. The definition of living things classify bacteria as a living thing, while viruses are not.
Living things eat, breathe, sleep, drink water and produce offspring. Non-living things do not do any of these things. Non-living things are rocks, sand, air and water.
Scientists do not classify viruses as living things because they lack key characteristics of living organisms, such as the ability to reproduce and carry out metabolic processes on their own. Viruses are considered biological entities that require a host cell to replicate.
Scientists classify living things because then it's easier to share information, study, & discuss these living things.
Aristotle
Np
To be able to study all the living things in our universe, we need a way to group or classify them together. Scientists divided all things into living and non-living. Then they divided those (e.g. animal kindom and plant kingdom, then continued dividing them on how the items were seimilar or dissimilar).
The smallest group into which scientists classify living things is a species. A species is a group of organisms that can interbreed and produce fertile offspring.
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The term used by scientists to classify all living things is "taxonomy". Taxonomy is the branch of science that deals with the identification, naming, and classification of organisms based on their characteristics and evolutionary relationships.
scientist classify parts of an ecosystem by biotic things (living things) and abiotic things ( nonliving things).
Are you sure this is true? Because if it is then other stuff will happen.
Viruses do not behave like other living cells. For one, they can only reproduce within other organisms. And essentially that is about all they do. Granted there are negative reprocussions for the host organism, but the virus itself simply multiplies. Viruses are also smaller than cells and can use even simple bacteria as a host. They are considered to be more like "free floating chemical agents."
Invertebrates is the term for multicellular organisms that lack a backbone.