What are the five steps of translation?
Translation (Protein Synthesis)
- Initiation. In this step the small subunit part of the ribosome attaches to the 5′ end of the mRNA strand.
- Elongation.
- Termination.
What happens during the second step of translation?
mRNA Translation Is The Second Step Of Protein Synthesis During the transcription, the information encoded in the DNA is copied to a messenger RNA sequence (mRNA), which then can move through the nucleus membrane and can reach the ribosomes in the cytoplasm.
Which is not the step of translation?
Proteins are always biosynthesized from N-terminus to C-terminus. Therefore, the ( triplet) codon is present on mRNA and not on tRNA. Thus, the correct answer is option A. Was this answer helpful?
Where does translation happen?
Where Translation Occurs. Within all cells, the translation machinery resides within a specialized organelle called the ribosome. In eukaryotes, mature mRNA molecules must leave the nucleus and travel to the cytoplasm, where the ribosomes are located.
What is the correct order of the stages of translation?
The correct order of stages of translation is initiation, elongation and termination.
What two places in the cell can translation occur?
In eukaryotes, transcription and translation take place in different cellular compartments: transcription takes place in the membrane-bounded nucleus, whereas translation takes place outside the nucleus in the cytoplasm. In prokaryotes, the two processes are closely coupled (Figure 28.15).
Does translation occur in RER?
1 Answer. Translation occurs on ribosomes in the cytoplasm or rough endoplasmic reticulum.
What is transcription and translation?
Transcription and translation take the information in DNA and use it to produce proteins. Transcription uses a strand of DNA as a template to build a molecule called RNA. During translation, the RNA molecule created in the transcription process delivers information from the DNA to the protein-building machines.
Is DNA involved in transcription?
Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template.
What is faster transcription or translation?
If translation was faster than transcription, it would cause the ribosome to “collide” with the RNA polymerase in prokaryotes where the two processes can happen concurrently. In another twist and turn of the central dogma, it was shown that ribosomes can be important for fast transcription in bacteria (S.
What is the goal of transcription?
The goal of transcription is to make a RNA copy of a gene’s DNA sequence. For a protein-coding gene, the RNA copy, or transcript, carries the information needed to build a polypeptide (protein or protein subunit). Eukaryotic transcripts need to go through some processing steps before translation into proteins.
What is the goal of translation?
What is your ultimate goal for translation? to make a protein and use that RNA to make a protein.
What is the process of transcription and translation together?
Together, transcription and translation are known as gene expression. During the process of transcription, the information stored in a gene’s DNA is passed to a similar molecule called RNA (ribonucleic acid) in the cell nucleus. A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time.
What are 3 nucleotides together called?
three nucleotides—called a triplet or codon—codes for one particular amino acid in the protein. The nucleotide sequence in the DNA is first transcribed into a molecule of messenger RNA (ribonucleic acid).
Which steps in translation are blocked by tetracyclines and macrolides?
Macrolide antibiotics inhibit translation by binding in the ribosomal nascent peptide exit tunnel. It was believed that macrolides interfere with protein synthesis by obstructing the egress of nascent proteins.২৭ অক্টোবর, ২০১৪