A Prokaryote is an organism which has no 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.
The nucleus is a small, dense organelle found in the center of a cell. It is typically about 10 micrometers in diameter and contains the cell's genetic material, known as DNA. The nucleus is surrounded by a double membrane called the nuclear envelope and contains a nucleolus, where ribosomes are assembled.
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.
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There is more than one kind of nucleus; the most usual types are cell nuclei and atomic nuclei, and even then, not all cell nuclei and not all atomic nuclei are the same size either. The average size of an animal cell nucleus is 900-1000nm.
Nucleus of a cell ~10-7 - 10-6 m Atomic nucleus ~10-14 m
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.
Diplodocus
An atom nucleus is typically on the order of femtometers (10^-15 meters) in size. A cell is much larger, with most human cells ranging from 10 to 30 micrometers in diameter.
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.
The nucleus is a small, dense organelle found in the center of a cell. It is typically about 10 micrometers in diameter and contains the cell's genetic material, known as DNA. The nucleus is surrounded by a double membrane called the nuclear envelope and contains a nucleolus, where ribosomes are assembled.
The diameter of a nucleus can vary depending on the type of cell it belongs to. On average, the diameter of a cell nucleus is about 5-10 micrometers. However, in some larger cells or under certain conditions, the nucleus can be larger.
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.
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The main parts of a cell include the cell membrane, which controls what goes in and out of the cell, the nucleus, which houses the cell's DNA, and the cytoplasm, where most cellular activities take place. Other important parts include organelles like mitochondria for energy production and the endoplasmic reticulum for protein synthesis.
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.
Brain cells :)