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I think currently the smallest living organisms are thought to be "viroids", which are smaller than viruses. Scientists are still figuring out exactly what viroids are, and do, but they are able to replicate, which means they are life.

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14y ago

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What is the smallest organized unit of life?

The cell is the smallest organized unit of life. It is the basic structural and functional unit of all living organisms. Cells can work independently or together to carry out essential functions for an organism's survival.


The smallest unit of an organism that carries on the functions of life?

The smallest unit of an organism that carries on the functions of life is a cell. Cells are the basic building blocks of living organisms and are capable of performing activities such as metabolism, growth, and reproduction.


The smallest unit of ecological organization is a single what?

organ, or unit e.g. a flower Population


The smallest functional and structural unit of all living organisms?

The cell is the smallest functional and structural unit of all living organisms. Cells perform all the necessary functions for life, including growth, reproduction, and responding to stimuli. Each cell is capable of carrying out specific tasks to contribute to the organism's overall function.


What is the smallest group of living things?

The smallest living things depend on how a living thing is defined. Some biologists do not believe viruses are living organisms because there are no free living forms (all are parasitic) and because they must reply on their host for reproduction. Others believe that, despite this, they have an existence of their own separate to the host and are subject to natural selection and are therefore alive. If you accept viruses are not alive, the smallest living things would be amongst the bacteria or protists. Bacteria are single celled organisms with no cell nucleus while protists have a nucleus. Generally the bacteria are slightly smaller but their sizes overlap. If you accept that viruses are alive, the smallest group are the Parvoviruses between 18 and 26 nanometres. These are single stranded DNA viruses. 1 nm = 1/1000000000 metres or 0.000039 inches.

Related Questions

What do you call the smallest living of an organism?

a cell


What is the smallest part of the living organism?

a cell


What is smallest living part of a organism?

a cell


What is the smallest unit of a living organism or nonliving thing?

The cell is the smallest living thing and an atom is the smallest non-living thing.


What is the smallest unit of an organism that is classified as living?

cell


What do you call the smallest living part of an organism?

a cell. it is the basic component off all matters.


What is the smallest building block of any living organism?

The cell.


What is the smallest living cell in the world?

The microorganism is SAR11, the smallest free living cell known and probably the most abundant organism in the seas


Is a cell the smallest particle of ordinary matter?

No, a cell is the smallest part of a living organism that can be considered alive.


What is the smallest possible living organism?

The smallest living organism is Nanoarchaeum equitans. This minuscule microbe was only just discovered in a hydrothermal vent off the coast of Iceland and its cells are only 400 nanometers across.


What are the smallest structures that biologists consider to be living?

Cells are the smallest structures of an organism. (nothing simpler than a cell is considered to be alive)


What are the smallest unit on earth that is considered alive?

Difficult question. Viruses can be considered non-living because they lack a cellular structure and cannot metabolize things on their own. Porcine cicovirus is the smallest virus. Nanobes are considered the smallest known organism by most. But there are also Nanoarchaeum and Mycoplasma Gentilalium.