I think all animals have at least some cells with nuclei. But for sure, red blood cells do not have a nucleus. That's why when people test for DNA from blood they have isolate the red and white blood cells.
Multicellular organisms whose cells have nuclei but don't have cell walls are called anamalia cells
Cells that do not contain a "true" nucleus are called prokaryotes. Sometimes eukaryotic cells are anucleate(no nucleus) when mature. Erythrocytes (red blood cells) in mammals are an example of eukaryotic cells that do not contain a nucleus when mature.
Organisms made of cells that contain nuclei are classified as eukaryotes. Eukaryotic cells have a well-defined nucleus that houses their genetic material within a membrane-bound organelle. Examples of eukaryotic organisms include animals, plants, fungi, and protists.
Some unicellular organisms get by fine with no nucleus. The general term for these is prokaryotes. (A few prokaryotes form multicelluar stages, but this is not common.) Most multicellular organisms... and some unicellular organisms... do have cell nuclei. The general term for these is eukaryotes. Some specialized cells in multicellular organisms have no nucleus. For example, mammalian red blood cells have no nucleus. The generic term for any cell without a nucleus, whether a prokaryote or a specialized cell in a eukaryote, is anucleate (which simply means "without a nucleus").
No, all living organisms are made up of cells. Cells are the basic unit of structure and function in living organisms.
Protists
Protists
No, protists have a nucleus which makes them procaryotic
Prokaryotes.
Multicellular organisms whose cells have nuclei but don't have cell walls are called anamalia cells
Prokaryotes are organisms whose cells lack nuclei. An example of a prokaryote is bacteria.
No. Animals, plants and most living organisms do not lack a nuclei.
Eukarya
They are called eukaryotes .
Like archaea, bacteria are also single-celled organisms without nuclei.
Prokaryotic.
Cellular nuclei. Eukaryotic organisms have cells with a nucleus. We are eukaryotes.