Science Quiz Protein Synthesis

One

Proofreading the code

mRNA (messenger RNA) copies the message from DNA in the nucleus and carries it to the ribosomes to tell it what proteins it has to produce.

<p>tRNA (transfer RNA) carries amino acids to the ribosome and adds them to the growing protein.</p> Signup and view all the answers

<p>Amino acids</p> Signup and view all the answers

<p>Three</p> Signup and view all the answers

<p>(peptide) Covalent bond</p> Signup and view all the answers

<p>mRNA enters ribosomes</p> Signup and view all the answers

<p>Ribosomes attach to mRNA</p> Signup and view all the answers

<p>tRNA attaches to mRNA</p> Signup and view all the answers

<p>Amino acids join in the ribosome</p> Signup and view all the answers

<p>Protein chain forms</p> Signup and view all the answers

<p>The first step of protein synthesis is called transcription. The DNA transcription to mRNA is actually the first step of protein synthesis. During this step, the instructions encoded in the DNA of the genes are transcribed into the nucleotide sequence code of RNA.</p> Signup and view all the answers

<p>The process of translation is the second step of protein synthesis. As mentioned, the process of translation happens in the cytoplasm, where mRNA binds with ribosomes. Ribosomes have three spatial regions called binding sites, which play an important role in protein synthesis.</p> Signup and view all the answers

<p>The peptide chain leaves the ribosome. The N-formyl-methionine that was used to initiate protein synthesis is also hydrolyzed from the completed peptide at this time. The ribosome is now ready to repeat the synthesis several more times.</p> Signup and view all the answers