QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Order the steps of protein synthesis.
DNA is transcribed.
RNA is modified into mRNA.
A ribosome binds to mRNA.
Amino acids are lined up in a sequence.
Chemical bonds are formed and a protein is produced.
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Step 1:I'll solve this problem by ordering the steps of protein synthesis in the correct sequence:
Step 2:: DNA Transcription
The process begins with DNA transcription, where the genetic information from DNA is used to create a complementary RNA strand. The enzyme RNA polymerase reads the DNA template and synthesizes a pre-mRNA molecule.
Step 3:: RNA Modification (mRNA Processing)
The initial RNA transcript (pre-mRNA) is modified to create mature mRNA. This involves: - Adding a 5' cap - Adding a 3' poly-A tail - Removing introns through splicing - Creating a mature mRNA molecule ready for translation
Step 4:: Ribosome Binding
The mature mRNA moves to the cytoplasm and a ribosome attaches to the mRNA. This is the beginning of translation, where the ribosome will read the genetic code.
Step 5:: Amino Acid Sequencing
Transfer RNA (tRNA) molecules bring specific amino acids to the ribosome. The ribosome reads the mRNA codons and lines up the corresponding amino acids in the correct sequence.
Step 6:: Protein Formation
Chemical peptide bonds are formed between the amino acids, creating a polypeptide chain. As the ribosome continues to read the mRNA, the protein chain grows and eventually folds into its final three-dimensional structure.
Final Answer
1. DNA Transcription 2. RNA Modification (mRNA Processing) 3. Ribosome Binding 4. Amino Acid Sequencing 5. Protein Formation
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