Synthesis of proteins in Euk. cells

DNA that is transcribed into ribosomal RNA, which then combines with proteins to form ribosomal subunits. these subunits then go out into the cytoplasm and bind with mRNA to form a functional ribosome, which is responsible for protein synthesis. the mRNA is transcribed from DNA in the nucleus and then exported through nuclear pores to the cytoplasm for translation.
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I'm a little confused as to how the nucleolus in a eukaryotic cell manages to synthesize proteins. For example, in the nucleolus, does it contain DNA that it uses to synthesize ribosomal RNA, which then synthesizes ribosomal subunits? Then the ribosomal subunits go out into the cytoplasm to react with mRNA to form the protein? Like where does the mRNA come from...I don't think it comes from the nucleolus...maybe the nucleus?



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lol have you taken general biology?

mRNA is transcribed from DNA, which is in the nucleus lol. it's then exported through nuclear pores to be translated into proteins.

the nucleolus is in the nucleus and it's primary purpose is to make ribosomes.

the actual process from gene to ribosome is very complex.

" For example, in the nucleolus, does it contain DNA that it uses to synthesize ribosomal RNA, which then synthesizes ribosomal subunits? Then the ribosomal subunits go out into the cytoplasm to react with mRNA to form the protein? "

this is about correct.
 

1. How are proteins synthesized in eukaryotic cells?

In eukaryotic cells, proteins are synthesized in the ribosomes, which are located in the cytoplasm. The process of protein synthesis involves the transcription of DNA into messenger RNA (mRNA) and the translation of mRNA into a specific sequence of amino acids, which make up the protein.

2. What is the role of ribosomes in protein synthesis?

Ribosomes play a crucial role in protein synthesis by serving as the site where the translation of mRNA into proteins occurs. They are composed of two subunits, one larger and one smaller, and they work together to read the genetic code of mRNA and assemble the corresponding amino acids into a protein chain.

3. What is the difference between transcription and translation in protein synthesis?

Transcription is the process of copying the genetic information from DNA into mRNA, while translation is the process of using that mRNA to produce a specific sequence of amino acids in a protein. Transcription occurs in the nucleus of eukaryotic cells, while translation occurs in the cytoplasm.

4. Can protein synthesis in eukaryotic cells be regulated?

Yes, protein synthesis in eukaryotic cells can be regulated through various mechanisms. For example, the expression of certain genes can be turned on or off, controlling the amount of mRNA available for translation. Additionally, the rate of translation itself can be regulated through factors such as the availability of amino acids and energy.

5. What is the importance of protein synthesis in eukaryotic cells?

Protein synthesis is essential for the growth, development, and function of eukaryotic cells. Proteins serve a variety of roles, including enzymatic functions, structural support, and transportation of molecules within the cell. Without proper protein synthesis, cells would not be able to perform their necessary functions and would ultimately die.

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