Where is a nucleus located and what is its size?
958754
usually at the centre. but sometimes lies in the periphal region if vacuole is too large(vacuole displaces the nucleus eg. in plant cell) \n    its size differs from cell to cell. however  its size is significantly larger than many other cell organelles like ribosome,lysosome, ER, etc but smaller than vacuole in plant cells
524029
organ: brain\nmolecule: DNA
1175961
the nucleus of the cell controls and coordinates all the work of the cell. this takes care of composition.the cell wall and the cell membrane proects the cell
273147
The volume of an atom is actually determined by the electrons.  An atom is composed of protons and neutrons in the nucleus and electrons in a cloud around the nucleus.  The nucleus does contribute nearly 100% of the mass of an atom but very little volume.  Electrons weigh basically nothing but are so far away from the nucleus that the volume of the nucleus is negligible.  To relate to something you may understand...if an atom's nucleus was placed at the fifty yard line in a football stadium the electron cloud would be up at the highest levels of the seating.
410056
ATOM..basic building block\n \n[Gr.,=uncuttable (indivisible)], basic unit of matter; more properly, the smallest unit of a chemical element having the properties of that element.  That is the definition.  Continue to read further; it really gives great detail!!!!!\n\nStructure of the Atom\n\nThe atom consists of a central, positively charged core, the nucleus, and negatively charged particles called electrons that are found in orbits around the nucleus.\n\nThe Nucleus\n\nAlmost the entire mass of the atom is concentrated in the nucleus, which occupies only a tiny fraction of the atom's volume. The nucleus of an atom consists of neutrons and protons, the neutron being an uncharged particle and the proton a positively charged one. Their masses are almost equal. Atoms containing the same number of protons but different numbers of neutrons represent different forms, or isotopes, of the same element.\n\nThe Electrons\n\nSurrounding the nucleus of an atom are its electrons; for a neutral atom, the number of electrons is equal to the atomic number. The outermost electrons of an atom determine its chemical and electrical properties. An atom may combine chemically with another atom in various ways, either by giving up or receiving electrons, thus setting up an electrical attraction between the atoms (see ion), or by sharing one or more pairs of electrons (see chemical bond). Because metals have few outermost electrons and tend to give them up easily, they are good conductors of electricity or heat (see conduction).\n\nThe electrons are often described as revolving about the nucleus as the planets revolve about the sun. This picture, however, is misleading. The quantum theory has shown that all particles in motion also have certain wave properties. For a particle the size of an electron, these properties are of considerable importance. As a result the electrons in an atom cannot be pictured as localized in space, but rather should be viewed as smeared out over the entire orbit so that they form a cloud of charge. The electron clouds around the nucleus represent regions in which the electrons are most likely to be found. The shapes of these clouds can be very complex, in marked contrast to the simple elliptical orbits of planets. Surprisingly, the sizes of all atoms are comparable, in spite of the large differences in the number of electrons they contain.\n\nAtomic Weight and Number\n\nThe atomic number of an atom is simply the number of protons in its nucleus. The atomic weight of an atom is given in most cases by the mass number of the atom, equal to the total number of protons and neutrons combined. An atom may be conveniently symbolized by its chemical symbol with the atomic number and mass number written as subscript and superscript, respectively. For example, the symbol for uranium is U (atomic number 92); the isotopes of uranium with atomic weights 235 and 238 are indicated by 23592U and 23892U.\n\nDevelopment of Atomic Theory\n\nEarly Atomic Theory\n\nThe atomic theory, which holds that matter is composed of tiny, indivisible particles in constant motion, was proposed in the 5th cent. by the Greek philosophers Leucippus and Democritus and was adopted by the Roman Lucretius. However, Aristotle did not accept the theory, and it was ignored for many centuries. Interest in the atomic theory was revived during the 18th cent. following work on the nature and behavior of gases (see gas laws).\n\nFrom Dalton to the Periodic Table\n\nModern atomic theory begins with the work of John Dalton, published in 1808. He held that all the atoms of an element are of exactly the same size and weight (see atomic weight) and are in these two respects unlike the atoms of any other element. He stated that atoms of the elements unite chemically in simple numerical ratios to form compounds. The best evidence for his theory was the experimentally verified law of simple multiple proportions, which gives a relation between the weights of two elements th
716257
In English we use nucleus to mean the central mass or kernel.\nIn Latin also nucleus could mean kernel, inner part or little nut.\nSo the meaning is essentially the same in either language.\n\nYou ask what in means in Latin then say not in the language Latin, which is rather confusing!
831968
The nucleus is held together by the strong nuclear force.  It acts at extremely short distances.  It is strong enough to overcome the mutual repulsion of the protons.  The electrons orbit the nucleus, attracted to by the electric force.  Gravitation is much too weak to affect the relationships of subatomic particles within the atom.
883285
Square, with its cell wall?\n\nIt's been a while since undergrad basic biology:-)
821161
Nuclear?  Nuclear envelope?  Nuclear membrane? \n\nThe word 'eukaryote' means 'true nuclei'.  They are talking about the membrane which surrounds the nucleus of the cell.  This is not present in Prokaryotes.
278087
The small, dark region in the cell nucleus is indeed called the nucleolus.  It is thought to be the site of ribosome synthesis.
891283
Chromatin is the unbound DNA inside the nucleus.  So its pretty much what form the DNA is in at any time thats not cell division.
165284
What is the radious or diameter?
860903
protons-nutrons-nucleus
910339
1. correct\n2. correct\n3. nucleus\n4. correct\n\n7. .0625g\n8. No
774048
I would guess: Nucleus, Mitochondria, Peroxisomes, Endoplasmic reticulum and Golgi
248643
I'm not sure if you mean the "nucleus" or the "nucleolus", but either way, in cells which have a nucleus, the DNA resides here mostly because of seperation of activities in the cell - all of the enzymes used to process DNA (ie, winding and unwinding, transcription into RNA) are in the nucleus.  Other organelles in a cell, like the mitochondria or Golgi, similarly have membranes and components for specific cell activities.
579721
B\n\n\nDuring interphase, the chromosomes are found arranged in the nucleus and appear as a network of long, thin threads, called the chromatin