Prokaryotes VS Protists? What is called prokaryotes

The main difference is whether there is a real nucleus or not. If you have it, it's a eukaryotic cell, and if you don't, it's a prokaryotic cell.

The difference between eukaryotes and prokaryotes can be analyzed in terms of size, structure, and representative taxa

1. Size: Prokaryotes are smaller in size and eukaryotes are larger.

2. Structure: The difference between prokaryotic cells and eukaryotic cells:

1) Cell wall: The main components of the cell wall of a prokaryotic cell are polysaccharides and proteins. The main components of the cell wall of plants in eukaryotes are pectin and cellulose.

2) Cell membrane: The composition of the cell membrane of prokaryotic cells and eukaryotic cells is about the same.

3) Cytoplasm: mainly organelles. Prokaryotic cells have only simple organelles like ribosomes.

Eukaryotic cells have many types of organelles, and the organelle structure is relatively complex. Animal and plant cells generally have mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, etc., animal cells and lower plant cells have centrosomes, and plant cells generally contain chloroplasts, vacuoles, etc.

4) Nucleus: Prokaryotic cells do not have a true nucleus (that is, there is no nuclear membrane), but they contain genetic material DNA, and the DNA is mainly concentrated in the nucleoid, there are no histones, so there are no chromosomes. Eukaryotic cells have a nucleus (and therefore a nuclear membrane) that contains the genetic material DNA, which binds to histones to form chromosomes.

3. Represent taxa.

Prokaryotes: bacteria, cyanobacteria, actinomycetes, mycoplasma, chlamydia, rickettsia, etc.

Eukaryotes: animals, plants, fungi, etc.

Prokaryotes (as opposed to eukaryotes) are organisms that do not have a mature endomembrane system (mainly without a nuclear membrane), such as cyanobacteria and bacteria.

Protists are a class of tiny organisms composed of single cells, which are divided into four classes...... flagellates, sarpods, sporozoids, and cilia

The main difference between them is whether there is a definite nuclear membrane (although prokaryotes do not have a nuclear membrane, they have a nucleoid, and the genetic material (DNA strand) is present here) Again, the organelles of prokaryotes are very simple, generally only ribosomes, while the organelles of protists are relatively complete.

Prokaryotes do not have a nucleus, i.e., no nuclear membrane, like bacteria, actinomycetes, etc. Protists are eukaryotes with a nucleus and unicellular like paramecium, amoeba, etc.

Prokaryotes do not have a formed nucleus, which is the biggest difference from protists.

Prokaryotes are a class of primitive unicellular organisms that have no nuclear membrane and only naked DNA called the nuclear region.

They are all single-celled prokaryotes. The structure is simple, and there are no obvious fleshy organelles such as Golgi apparatus, mitochondria, chloroplasts, etc.

Prokaryotes are organisms that do not have a nucleus, common bacteria are prokaryotes, and fungi are eukaryotes.

1. Most of the protists are unicellular organisms and belong to eukaryotes, including the simplest eukaryotes. Prokaryotes, on the other hand, are a class of single-celled (or multicellular, e.g., Candida) organisms that do not have a formed nucleus or mitochondria.

2. The structure is different, and the cells of protists have a nucleus and an organelle with a membrane. Larger and more complex than prokaryotic cells. Most of them are unicellular organisms, while some are multicellular but do not have tissue differentiation.

Prokaryotes, on the other hand, are unicellular organisms that possess the basic structure of a cell and contain cytoplasm, cell wall, cell membrane, and flagella. The cell wall does not include all prokaryotes, with one exception for prokaryotes: in prokaryotes, except for mycoplasma, the rest have cell walls; Mycoplasma are the only prokaryotes that do not have a cell wall.

3. All protists live in water. Whereas, prokaryotes partially live in water and partly do not.

4. All protists undergo aerobic respiration. Their nutritional patterns are also the most varied among eukaryotes, some are autotrophic, some are heterotrophic, and some are mixed trophs, which can be photosynthesized and heterotrophic (e.g., euglena). Whereas, some prokaryotic cells are capable of aerobic respiration.

Some prokaryotes, such as lactic acid bacteria and methanogens, do not have enzymes related to aerobic respiration, so they can only perform anaerobic respiration. In summary, most prokaryotes are capable of aerobic calling.

Prokaryotes are organisms composed of prokaryotic cells, a class of single cells that do not have a forming nucleus or mitochondria, including cyanobacteria, bacteria, actinomycetes, spirochetes, mycoplasma, etc.

In the 70s, the data of molecular biology showed that the 16S RNA nucleotide sequence of methanogenic bacteria, extreme halophilic bacteria, extremely acid-resistant and heat-resistant sulfide phylloids, and thermophilic bacterium plastids were different from both ordinary bacteria and eukaryotes. In addition, the cell membrane structure, cell wall structure, coenzymes, metabolic pathways, and translation mechanisms of tRNA and rRNA in these organisms are all different from those of general bacteria.

Therefore, it has been argued that the above-mentioned organisms should be classified as prokaryotes and eukaryotes"Third Biological Realm"or the archaeal kingdom.

Protists, contained in the simplest eukaryotes. All live in the water and are not keratin. It can be divided into three major categories, algae, protozoa, and protobacteria. They have a nucleus and membrane organelles inside their cells.

Proto-Zen nucleotypes did not have a nucleus, only a nucleus. Such as cyanobacteria, bacteria, etc. Only some cells of higher eukaryotes do not have a nucleus, such as mature red blood cells in humans and sieve cells in plants.

Organisms can be simply divided into viruses, prokaryotes, eukaryotes, of which viruses are non-cellular structures, prokaryotes (bacteria, mycoplasma, cyanobacteria, etc.) and eukaryotes (animals and plants, fungi, etc.) have cell structures, prokaryotes are mostly unicellular, eukaryotes are mostly multicellular organisms, the main difference is whether the cell is based on whether it has a nucleus and other complex organelles.