whats the function of ribosomes??

Question

from cells

Answer 1

Ribosomes are the sites of protein synthesis, where RNA is translated into protein. When cells need large numbers of proteins, they must first build numerous ribosomes. Because protein synthesis is so important to cells, there are large numbers of ribosomes found throughout cells often numbering in the hundreds or thousands. In eukaryotic cells, three of the four ribosomal RNA strands are synthesized in the nucleolus, a structure in the nucleus. The fourth ribosomal RNA strand is synthesized outside of the nucleolus and then transported into the nucleolus for ribosome assembly. Ribosomal proteins enter the nucleolus and combine with the four ribosomal RNA strands to create the large and small subunits which are two ribosomal structures. The two subunits unite outside the nucleus just before the ribosome begins to manufacture proteins. Prokaryotic cells lack a nucleus or nucleolus and therefor ribosomal synthesis takes place in the cytoplasms. Without the ribosomes the message would not be read and proteins could not be produced.

Answer 2

Ribosomes are the workhorses of protein biosynthesis, the process of translating messenger RNA (mRNA) into protein. The mRNA comprises a series of codons that dictate to the ribosome the sequence of the amino acids needed to make the protein. Using the mRNA as a template, the ribosome traverses each codon of the mRNA, pairing it with the appropriate amino acid. This is done using molecules of transfer RNA (tRNA) containing a complementary anticodon on one end and the appropriate amino acid on the other.

Protein synthesis begins at a start codon near the 5' end of the mRNA. The small ribosomal subunit, typically bound to a tRNA containing the amino acid methionine, binds to an AUG codon on the mRNA and recruits the large ribosomal subunit. The large ribosomal subunit contains three tRNA binding sites, designated A, P, and E. The A site binds an aminoacyl-tRNA (a tRNA bound to an amino acid); the P site binds a peptidyl-tRNA (a tRNA bound to the peptide being synthesized); and the E site binds a free tRNA before it exits the ribosome.

Answer 3

Ribosomes are the places where proteins are built by making long chains of amino acids. Some ribosomes are lined up on the endoplasmic reticulum, and some ribosomes are free-floating in the cytoplasm.

Ribosomes are not energy factories.
Mitochondria break glucose molecules to get energy to make ATP.

Answer 4

Small organelles made of rRNA and protein in the cytoplasm of prokaryotic and eukaryotic cells; aid in the production of proteins on the rough endoplasmic reticulum and ribosome complexes. The site of protein synthesis. The ribosome is composed of two subunits that attach to the mRNA at the beginning of protein synthesis and detach when the polypeptide has been translated.

Answer 5

Ribosomes are the site of protein synthesis in the cell

Answer 6

Ribosomes are where protein synthesis occurs. After RNA polymerase transcribes a gene into messenger RNA (mRNA), the mRNA binds to a ribosome and translation takes place. Any good basic biology textbook will give you more details.

Answer 7

Synthesize proteins a cells Protein factories

Answer 8

I don't know everything they do, but in bio 2 the other day, my teacher told us how they're used in the translation of RNA to find the codons to connect the right amino acids to make proteins

Answer 9

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Answer 10

They are the sites of protein synthesis - proteins are assembled.