Question

Name the following
Any two single-celled organisms.

Answer 1

In contrast to a multicellular organism, which consists of several cells, a unicellular organism, also known as a single-celled organism, is an organism that consists of only one cell. All processes of life, such as digestion, excretion and respiration, occur within a single cell in a unicellular organism. Microorganisms are not visible to the naked eye. Extreme habitats, such as hot springs, thermal ocean vents, polar ice, and tundra, are home to many unicellular species.

Complete answer:
Two types of single-celled organisms are:
I. Bacteria: Bacteria are a type of biological cell (singular bacterium). They make up a wide group of prokaryotic species. Bacteria come in a variety of sizes, ranging from spheres to rods and spirals, and are usually a few micrometers long. Bacteria are among Earth's first life forms and can be found in nearly every ecosystem. Bacteria can be found in soil, water, acidic hot springs, nuclear waste, and the earth's crust's deep biosphere.
II. Amoeba: An amoeba is a single-celled, highly motile eukaryotic organism. It moves in an "amoeboid" manner and belongs to the protozoa kingdom. As a result, microbiologists sometimes use the word "amoeboid" to refer to both a particular form of movement and amoebae. Amoebae are not a distinct taxonomic group; instead, they are classified based on their "amoeboid" movement rather than distinct morphological features.

Note:
An extremophile is a term given to that unicellular organism that can survive an extreme environment. Extremophiles are adapted to live in environments where multicellular organisms cannot exist, such as extremes of temperature or pH. This one-of-a-kind function enables scientists to use unicellular species in previously unimaginable ways. When scientists found Thermus aquaticus in the boiling water of a Yellowstone Park hot spring, they used its unique enzyme Taq polymerase to replicate DNA billions of times in a matter of hours. Forensic science and genetic testing as we know it today do not work without this discovery.