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Eukaryotic cells are much larger than prokaryotic cells. Most prokaryotic cells, such as bacteria, contain no nucleus, but instead has a nucleolus which contains its DNA structure. Eukaryotic cells, found in most plants and animals, are much larger in size and do contain a central nucleus, which holds its DNA.
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How big are prokaryotic cells?
Size of a eukaryotic cell is 5-100 mm and Size of a prokaryotic cell is 1-10mm.
Does prokaryotic cells have peroxisomes?
No, prokaryotic cells do not have peroxisomes. Peroxisomes are membrane-bound organelles found in eukaryotic cells that contain enzymes involved in various metabolic processes, such as lipid breakdown and detoxification reactions.
Do all living things have a nucleus?
No, not all living things have a nucleus. Prokaryotic cells, such as bacteria, do not have a nucleus. They have a nucleoid region where the DNA is located, but it is not enclosed within a membrane like in eukaryotic cells.
Why can prokaryotic cells be smaller than eukaryotic cells and still carry on all the functions of life?
The process in a eukaryotic cell tends to be more complex, so the organisms tend to be big. However in prokaryotic cells all it needs is respiration and replication to sustain its unicellular body. They are also much smaller because they lack a membrane-bound nucleus and their DNA/RNA is just floating around in the cytoplasm.
If a cell does not have a membrane-bound nucleus it is also not likely to have?
Organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus. These organelles are commonly found in eukaryotic cells, which are characterized by having a membrane-bound nucleus. Cells lacking a nucleus, like prokaryotic cells, typically do not contain these membrane-bound organelles.
How big are prokaryotic cells?
Size of a eukaryotic cell is 5-100 mm and Size of a prokaryotic cell is 1-10mm.
Does prokaryotic cells have peroxisomes?
No, prokaryotic cells do not have peroxisomes. Peroxisomes are membrane-bound organelles found in eukaryotic cells that contain enzymes involved in various metabolic processes, such as lipid breakdown and detoxification reactions.
Do all living things have a nucleus?
No, not all living things have a nucleus. Prokaryotic cells, such as bacteria, do not have a nucleus. They have a nucleoid region where the DNA is located, but it is not enclosed within a membrane like in eukaryotic cells.
Differences between eukaryotic cells and prokaryotic cells are .?
Eukaryotic cells have a true nucleus, bound by a double membrane. Prokaryotic cells have no nucleus. The purpose of the nucleus is to sequester the DNA-related functions of the big eukaryotic cell into a smaller chamber, for the purpose of increased efficiency. This function is unnecessary for the prokaryotic cell, because its much smaller size means that all materials within the cell are relatively close together. Of course, prokaryotic cells do have DNA and DNA functions. Biologists describe the central region of the cell as its "nucleoid" (-oid=similar or imitating), because it's pretty much where the DNA is located. But note that the nucleoid is essentially an imaginary "structure." There is no physical boundary enclosing the nucleoid.Eukaryotic DNA is linear; prokaryotic DNA is circular (it has no ends).Eukaryotic DNA is complexed with proteins called "histones," and is organized into chromosomes; prokaryotic DNA is "naked," meaning that it has no histones associated with it, and it is not formed into chromosomes. Though many are sloppy about it, the term "chromosome" does not technically apply to anything in a prokaryotic cell. A eukaryotic cell contains a number of chromosomes; a prokaryotic cell contains only one circular DNA molecule and a varied assortment of much smaller circlets of DNA called "plasmids." The smaller, simpler prokaryotic cell requires far fewer genes to operate than the eukaryotic cell.Both cell types have many, many ribosomes, but the ribosomes of the eukaryotic cells are larger and more complex than those of the prokaryotic cell. Ribosomes are made out of a special class of RNA molecules (ribosomal RNA, or rRNA) and a specific collection of different proteins. A eukaryotic ribosome is composed of five kinds of rRNA and about eighty kinds of proteins. Prokaryotic ribosomes are composed of only three kinds of rRNA and about fifty kinds of protein.The cytoplasm of eukaryotic cells is filled with a large, complex collection of organelles, many of them enclosed in their own membranes; the prokaryotic cell contains no membrane-bound organelles which are independent of the plasma membrane. This is a very significant difference, and the source of the vast majority of the greater complexity of the eukaryotic Cell. There is much more space within a eukaryotic cell than within a prokaryotic cell, and many of these structures, like the nucleus, increase the efficiency of functions by confining them within smaller spaces within the huge Cell, or with communication and movement within the Cell.Eukaryotic Cells are the largest Cells, while prokaryotic Cells are smaller than eukaryotic Cells. A eukaryotic Cell is about 10 times bigger than a prokaryotic Cell.Eukaryotic Cells have a bi-lipid-layer plasma membrane and an exterior glyco-callyx Cell Coat; prokaryotic Cells have a bi-lipid-layer plasma membrane and an exterior mostly cellulosic Cell Wall.A List:Prokaryotic cells:Most primitive, earliest form of lifeDo not have a pre-defined nucleusChromosomes are dispersed in the cytoplasmContain no membrane-bound organellesHave circular chromosomes and lack histone proteinsMost metabolically diverseSmall - typically 0.2-2.0 micrometers in diameterHave a primitive cytosketetal structures or don't have a cytoskeleton at allSmaller (70S) ribosomesDon't undergo meiosis but reproduce sexually by the transfer of DNA fragments through conjugationEukaryotic cells:More complex, evolved organsimsContain true nuclei in which chromosomes are compacted as chromatinContain membrane-bound organellesHave linear DNA and contain histone proteinsLarger - typically 10-100 micrometers in diameterHave a complex cytosketetonLarger (80S) ribosomReproduce sexually with the use of meiosis
Why can prokaryotic cells be smaller than eukaryotic cells and still carry on all the functions of life?
The process in a eukaryotic cell tends to be more complex, so the organisms tend to be big. However in prokaryotic cells all it needs is respiration and replication to sustain its unicellular body. They are also much smaller because they lack a membrane-bound nucleus and their DNA/RNA is just floating around in the cytoplasm.
What are the differences between prokaryotic cells and eukaryote cells?
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Do prokaryotes contain ribosomes?
Yes, prokaryotes contain ribosomes. In fact, ribosomes are essential organelles present in all types of cells, including prokaryotic cells. These ribosomes are involved in protein synthesis within the cell.
If a cell does not have a membrane-bound nucleus it is also not likely to have?
Organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus. These organelles are commonly found in eukaryotic cells, which are characterized by having a membrane-bound nucleus. Cells lacking a nucleus, like prokaryotic cells, typically do not contain these membrane-bound organelles.
Where do you find membrane bound organelles?
Membrane-bound organelles are mostly found in eukaryotic cells. These organelles include the nucleus, endoplasmic reticulum, Golgi apparatus, lysosomes, peroxisomes, mitochondria, and chloroplasts (in plant cells). They are enclosed by a lipid bilayer membrane that separates their internal contents from the rest of the cell.
When is a cell prokaryotic?
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Is a a large cell?
The largest cell in our body is an oocyte (egg cell), which is extermely big compared to any other cell. It is around 100 micrometers and much larger than most other cells in the body. Some of the smaller ones are single figures and white blood cells can be around 20 micrometers. So to put a general figure to eukaryotic cells, I think 1-100 micrometers is quoted.
How does eukaryotic and prokaryotic organisms undergo facilitated diffusion?
Diffusion is the ability of molecules to follow a concentration gradient, moving from regions of high to low concentration. For small, nonpolar molecules such as O2, CO2, and some narcotics, they are small enough to slip through the phospholipid bilayer of the plasma membrane. Small, polar molecules such as water, are also small enough to slip through, but because of their polar nature, this movement is impeded by a factor of 1000. What about larger molecules like glucose? These molecules are too big to slip through the phospholipid bilayer, regardless of the concentration gradient. Larger molecules require a protein channel for transport across the plasma membrane. Because the movement will be driven by the concentration gradient, this movement is called facilitated diffusion, to indicate that a protein channel is necessary. Both prokaryotic and eukaryotic cells have protein channels for this purpose.
