where does translation happends in the cell?
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Short answer is: it happens on the ribosomes located in the cytoplasm. If it is an eukaryote, it also happens in the chloroplasts and mitochondria.\n\nIn the bacteria, mRNA transcribed from DNA is bound by riibosomes and gets translated right away, even before transcription is over.\n\nIn eukaryotes, mRNA has to leave nucleus first. Ribosomes meet mRNA in the cytoplasm and start translating. \nIf RNA codes for cytoplasmic protein, translation goes on in cytoplasm until complete. \nIf mRNA codes for membrane protein, translation stalls at a "signal peptide" at the start of the future membrane protein.  Ribosome with signal peptide is recognized and transported to the endoplasmic reticulum where the membrane protein is threaded through membrane and its translation is finished.\n\nREMEMBER that eukaryotes also usually have mitochondria and (in plants) chloroplasts. Both mitochondria and chloroplasts have their own bacterial-type ribosomes which are fully capable of translation.
455022
cells dont have cells but they they have organelles which are sort of like cells, which includes mitochondria, ribosomes, golgi apparatus, etc. that have various functions such as converting sugar to energy, synthesizing proteins, etc. they're sort of like minature organs if the cell was your body (hence the name organelles
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they make proteins. And they aren't a cell, they're just part of a cell. So, for instance, if your body needs some insulin, the nucleus sends the ribosomes the instructions in the form of messenger RNA, and transfer RNA brings the appropriate amino acids to the Ribosomes, where the desired protein (in this case, insulin) is assembled out of amino acids.
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The nucleolus is found in the nucleus.  It is where ribosomes are produced.
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Through a process called translation in which the information contained in nucleic acids (DNA & RNA) are converted into a protein sequence. This process is done on piece of cellular machinery called the ribosome.
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steroids enter the nucleus of the cell and bind to regulatory portions  of DNA and cause the DNA to go to work transcribing proteins. the proteins then have specific functions in the cell. but steroids work by binding the DNA and turning it on
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The answer is A, translation.\n\n\nDuring translation, the messenger RNA copies information from DNA to produce proteins. The information gets read by  ribosomes which facilitate the production of proteins.
827299
That really depends on what kind of chemical reactions you are talking about.  If you want to know where metabolism takes place (breaking down sugars into energy), that would be in the mitochondria.  Synthesis of proteins occurs on the ribosomes.  Degradation of proteins occurs in the lysosomes.  Synthesis of DNA and RNA occurs in the nucleus.  Each part of the cell is involved in very important chemical reactions.
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DNA goes to mRNA\n\nthe mRNA has a signal sequence on the 5' end which directs it to the Ribosome and indicates whether it will be inserted into the Endoplasmic Reticulum(ER) while it is being translated.  In this case it is inserted into the ER.  As it is inserted it is folded into it's 3-D conformation.  Pending on whether parts are inserted into the membrane of the ER or not it will be determined if this Plasma Membrane(PM) protein is secreted or is stuck to the membrane.  After this you get the addition of the "glyco" part of the protein through numerous transferases and other molecules inside the ER.  This only happens inside the ER, as to why the former steps were necessary.  Then the protein is transfered via a vesicle to the Golgi Apparatus where further post-translational modifications take place.  At this point the protein is ready to go to the plasma membrane as a glycoprotein.  The protein needs no signal to get there however as the pathway from the Golgi to the PM is the "default" pathway and any unmarked(so to say) vesicle will find it's way to the Plasma Membrane.  And that's that.
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the mRNA and tRNA are actually not controlled. The only thing controlled is the formation of RNA. It is formed from a complementary strand of DNA. That mRNA which goes through nuclear pores to the Ribosome. When it reaches to ribosome it attaches with the ribosome. The mRNA has a specific in a group of three like: A-U-T. Each code refers to a unique tRNA which then brings an amino acid to form a polypeptide chain. At the end there is a code which is subscribed as a STOP Code by the nucleus. This codes are what coontroll the process of protien synthysis. But the formation of mRNA from a complementaery strand is controlled by nucleus And the movement of mRNA as well as tRNA. is also controlled by nucleus (to some extent)\nHope this Helps
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Protein synthesis occurs in the ribosomes of both plants and animals. Frequently these ribosomes are associated with the endoplasmic reticulum.
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All the answers are here --> http://en.wikipedia.org/wiki/Cell_%28biology%29\n(and in your book)
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Cell Membrane proteins are made inside the cell and inserted into invaginations of the cell membrane called Endoplasmic Reticulum.  At least that's how it works in Eukaryotes (everything from humans and plants to Amoebae).  Prokaryotes (bacteria) must do something similar, but their internal structure is different.\n\nEukaryotes have long stretches of endoplasmic reticilum inside them (but outside the nucleus).  ER is essentially the cell membrane, in long deep convoluted invaginations; it's continuous with the cell membrane but all-but pinched off at the cell surface.\n\nProteins are manufactured by ribosomes (it's a complicated mechanism, but involves the ribosomes anyway) which read the information of mRNA to string amino acids together to make protein.  If the nascent protein chain has the right sequences, its inserted into the ER membrane as it's growing.  As it grows, it pokes through the ER  and out the other side: the "head" of the protein sticks out, while the "tail" is still growing on the inside of the cell.  If the protein has a particular control sequence, called a "stop transfer" sequence, the mechanisms pushing it through the ER stop, and it remains embedded in the ER membrane.  If it doesn't have this sequence, it gets pushed right on through.\n\nWhen the protein is finished, a small pocket of the ER membrane pinches off to form a bubble or "vessicle" inside the cell.  The vessicle membrane will have the new protein embedded in it, with the head of the protein inside the vessicle and the tail sticking out.  If the protein was pushed all the way through, it will be completely inside the vessicle.\n\nThe vessicle is moved to the cell surface by microfibers (a kind of protein called actin that forms fibers that can slide over each other.  It's also found in muscle).  The vessicle fuses with the cell surface and opens up; the "inside" of the vessicle is now the outside of the cell.  The head of the protein, that was on the inside of the vessicle, is now on the outside of the cell, and the tail of the protein is still on the inside, and the cell membrane protein is ready to go.\n\nIf the protein went all the way through the ER, and wound up completely inside the vessicle, then it is secreted (released from, as in a secretion) from the cell when the vessicle fuses with the cell membrane.  You can turn a cell membrane protein into a secretatory protein by removing the "stop transfer" sequence of amino acids from the protein.  This is believed to happen sometimes, for example, when an antibody molecule (a protein) that is embedded in the cell membrane triggers the cell to begin to secrete the same antibody molecule into the blood stream: if something binds to the embedded antibody, the cell begins to manufacture the same molecule but without the stop-transfer sequence, so the cell now secretes antibodies.
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they are produced on the chromosomes in the nucleus of cells however,they are sent out of the nucleus where the message is translated into proteins which can be done in the cytoplasm on clusters of ribosomes, called "polyribosomes".  Or it can be done on the membranes of the rough endoplasmic reticulum.
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In translation, the ribosomes attach to the mRNA to create or synthesize polypeptides or proteins.  The ribosome attaches to a signal recognition particle (srp) which attaches to the ER at the translocation complex. This is your binding site. The srp then leaves and the polypeptide continues growing through the translocation complex into the ER until the process is complete. The ribosome then detaches releasing the mRNA. \n\nHope this helps. -r
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Doesn't get much simpler than this website, have fun!\n\nhttp://www.biology4kids.com/files/cell_main.html
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The mitochondria in cells.