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A Prokaryote is an organism which has no nucleus.
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How many chromosomes are in a cell nucleus?
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What a is other name for a cell that has no nucleus?
Cells that do not have a nucleus are called prokaryotic cells. These cells are mainly bacteria and do not contain organelles which makes a living cell living. Prokaryotic cells have few internal functions and are significantly different from eukaryotic cells, which are living cells.
What is Width of a cell?
There are two types of cells, the eukaryotic cells which have a nucleus and prokaryotic which donÕt. The typical width of a cell is 1 to 5 micrometer for prokaryotic cells and 10 to 100 for eukaryotic cells.
How the nucleus control cellular function?
Nucleus is a spherical-shaped organelle present in every eukaryotic cell. As compared to other cell organelles, the nucleus is the most prominent one, which accounts to about 10 percent of the cell's volume. In general, a eukaryotic cell has only one nucleus. However, some eukaryotic cells are enucleate cells (without nucleus), for example,red blood cells (RBCs); whereas, some are multinucleate (consists of two or more nuclei), for example, slime molds. Nucleus is separated from the rest of the cell or cytoplasm by a nuclear membrane.Cell Nucleus: StructureThe structure of a cell nucleus consists of nuclear membrane (nuclear envelope), nucleoplasm, nucleolus and chromosomes. Nucleoplasm, also known as karyoplasm, is the matrix present inside the nucleus. Let's discuss in brief about the several parts of a cell nucleus.Nuclear MembraneThe nuclear membrane is a double-layered structure that encloses the contents of the nucleus. The outer layer of the nuclear membrane is connected to the endoplasmic reticulum. A fluid-filled space or perinuclear space is present between the two layers of a nuclear membrane. The nucleus communicates with the remaining of the cell or cytoplasm through several openings called nuclear pores. Nuclear pores are the sites for the exchange of large molecules (proteins and RNA) between the nucleus and cytoplasm.ChromosomesChromosomes are present in the form of strings of DNA and histones (protein molecules) called chromatin. Chromatin is further classified into heterochromatin and euchromatin based on the function. The former type is a highly condensed trancriptionally inactive form, mostly present in adjacent to the nuclear membrane. Euchromatin is a delicate, less condensed organization of chromatin, which is found abundantly in a transcribing cell.NucleolusThe nucleolus is a dense, spherical-shaped structure present inside the nucleus. Some of the eukaryotic organisms have nucleus that contains up to four nucleoli. The nucleolus plays an indirect role in protein synthesis by producing ribosomes. Ribosomes are cell organelles made up of RNA and proteins; they are transported to the cytoplasm, which are then attached to the endoplasmic reticulum. Ribosomes are the protein-producing structures of a cell. Nucleolus disappears when a cell undergoes division and is reformed after the completion of cell-division.Cell Nucleus: FunctionsSpeaking about the functions of a cell nucleus, it controls the hereditary characteristics of an organism and is responsible for the protein synthesis, cell division, growth and differentiation. Here is a list of the functions carried out by a cell nucleus:Storage of hereditary material, the genes in the form of long and thin DNA (deoxyribonucleic acid) strands, referred to as chromatins.Storage of proteins and RNA (ribonucleic acid) in the nucleolus.Nucleus is a site for transcription in which messenger RNA (MRNA) are produced for the protein synthesis.Exchange of hereditary molecules (DNA and RNA) between the nucleus and rest of the cell.During the cell division, chromatins are arranged into chromosomes.Production of ribosomes (protein factories) in the nucleolus.Selective transportation of regulatory factors and energy molecules through nuclear pores.As the nucleus regulates the integrity of genes and gene expression, it is also referred to as the control center of a cell. Overall, the cell nucleus stores all the chromosomal DNA of an organism.
What is the size of the Nucleus?
Assuming you're talking about the nucleus of an atom, the nucleus is very small relative to the atom's volume as a whole. However, it makes up nearly all of an atom's mass, because it contains all the protons and neutrons. So, relative to the total atom, the nucleus is very small and very dense.
What is the approximate size of nucleus?
Nucleus of a cell ~10-7 - 10-6 m Atomic nucleus ~10-14 m
Is the nucleus the biggest organelle in a cell?
The diameter of a typical nucleus is only about 1 × 10-14 m (4 × 10-13 in), or about 1/100,000 of the diameter of the entire atom.
What is a type of dinosaur with 10 letters?
Diplodocus
How many chromosomes are in a cell nucleus?
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What are the main parts of the cell?
If it is an animal cell, then it's 9 parts are the vacuoles, the Golgi body, the cytoplasm, the mitochondria, the cell membrane, the lysosomes, the nucleus, the endoplasmic reticulum, and the ribosomes. If it is a plant cell, it has a lot of the the same parts, but some different ones. There are 10 parts in a plant cell. The endoplasmic reticulum, the Golgi body, the vacuoles, the cell wall, the cytoplasm, the cell membrane, the chloroplast, the mitochondria, the ribosomes, and the nucleus. I got this from a science book.
What is the size of DNA in eukaryotic cell?
The distance between bases in DNA is about 340 picometres. The diameter of the DNA helix is about 2 nanometres. The nucleus is about 6 micrometres in diameter. This is about 10% of the cell.
What a is other name for a cell that has no nucleus?
Cells that do not have a nucleus are called prokaryotic cells. These cells are mainly bacteria and do not contain organelles which makes a living cell living. Prokaryotic cells have few internal functions and are significantly different from eukaryotic cells, which are living cells.
What is Width of a cell?
There are two types of cells, the eukaryotic cells which have a nucleus and prokaryotic which donÕt. The typical width of a cell is 1 to 5 micrometer for prokaryotic cells and 10 to 100 for eukaryotic cells.
Which type of cell makes up 10 percent of the brain?
Brain cells :)
How can you identify a nucleus by looking at a cell through a microscope?
Two reasons: - the nucleus is stained - the magnifying power of the microscope makes small things look big
What are the parts of an plat cell?
You probably mean plant cell. 1. cell membrane 2.vacuole 3.mitochondria 4. cell wall 5. nucleus 6.ribosomes 7.endoplasmic reticulum 8.cytoplasm 9.golgi bodies 10.lysosomes
Where is the location of DNA in the body?
In an eukaryotic cell the DNA is located inside the nucleus. The prokaryotic cells do not have a nucleus. The DNA is present in a region of a cell called the "nucleoid", in which a single chromosomal double stranded DNA is located.
