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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.
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∙ 12y agoSpecies
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What is the smallest group of invertebrates?
The smallest group of invertebrates are sponges. They live in the ocean, fresh water ,lakes. and streams. Some things attach themselves to other things so they can get food.
What is the smallest unit of living systems?
This question is vague therefore I have provided two answers and explanations. The single cell is the smallest living unit within a living system. Quarks are the smallest particles of matter and atoms which composes all living things.
Ways to group and identify living things?
Similarities and Differences.
What is a group of living things called?
its called a species or a kingdom
What are the two goals of systematics?
the goals of systematic is to organize living things into group that have biological meaning.
What is the smallest group scientists classify living things?
Np
What is the smallest group into which scientists classify living things?
micro organisms
The smallest living things are single?
yes the smallest living orginizms are single celled
What is the smallest kingdom of living things?
eubacteria is the smallest kingdom
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 living part of a plant or an animal?
the smallest living things are made of of a single cell
What is Smallest living cell?
Mycoplasms =) The smallest living cell is called SAR11. It also has the smallest genome. It is a bacteria group found mainly in the seas.
The smallest living unit of all living things is?
cells
What is the smallest group of invertebrates?
The smallest group of invertebrates are sponges. They live in the ocean, fresh water ,lakes. and streams. Some things attach themselves to other things so they can get food.
What are the smallest structers to living things?
cells
What group of living things are 20 inches?
One group of living things that are 20 inches are cats. Another group of living things in this category would be ferrets.
Where you can found the smallest living things in your body?
cells
