Where are ribosomes made?

Answer

According to Florida State University, ribosomes are primarily constructed in the nucleolus of all living cells. Inside the nucleolus, four strands ribosomal RNA (rRNA) bind together with ribosomal proteins. This results in two structures, called the small ribosome subunit and the large ribosome subunit. Both of these subunits travel through pores in the nucleus and enter the free space of the cell.

Once the two subunits are in the cytoplasm, they may bind together and attach themselves to the nuclear envelope or endoplasmic reticulum, or they may float freely. However, if protein synthesis is not occurring, Florida State University contends that the two subunits separate themselves. The rRNA rather than the ribosomal proteins primarily determine the structure of the ribosome, even though they account for about 40 percent of the ribosome’s mass.

Ribosomes are small organelles that manufacture proteins for use both inside and outside of the cell. They are much smaller than the other organelles that are found in the cell, and have to be small enough to pass through the nuclear pores, as explained by Florida State University. In contrast to most other organelles, some ribosomes float freely through the cytoplasm of the cell. Such free-floating ribosomes generally produce proteins for use inside the cell, while bound ribosomes generally produce proteins for external use.

Q&A Related to "Where are ribosomes made?"
The Nucleolus, the center of the nucleus.
http://wiki.answers.com/Q/Where_are_ribosomes_made
The code is actually translated on structures that are also made in the nucleus, called Ribosomes.
http://www.chacha.com/question/where-ribosomes-are...
WHERE! Ribosomes are small organelles made of ribosomal RNA (rRNA) and a variety of 80 different proteins. rRNA is synthesized in the nucleolus. Ribosomal subunits are assembled there
http://answers.yahoo.com/question/index?qid=200809...
In a cell, the proteins are synthesized within the ribosomes. The nucleus controls the production of the proteins and regulates which ones are made and when.
http://www.ask.com/web-answers/Science/Biology/whe...
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