Question: What Must Happen Before Translation Occurs?

What are the 4 steps of translation?

Translation happens in four stages: activation (make ready), initiation (start), elongation (make longer) and termination (stop).

These terms describe the growth of the amino acid chain (polypeptide)..

What are the 7 steps of translation?

Terms in this set (7)1st step. The ribosomal subunits the mrna and the trna carrying methionine bind together.2nd step. The trna carrying the amino acid specified by the codon in the a site arrives.3rd step. A peptide bond forms between adjacent amino acids.4th step. … 5th step. … 6th step. … 7th step.

What usually terminates the process of translation?

Translation ends in a process called termination. Termination happens when a stop codon in the mRNA (UAA, UAG, or UGA) enters the A site. Stop codons are recognized by proteins called release factors, which fit neatly into the P site (though they aren’t tRNAs).

What is a codon?

A codon is a trinucleotide sequence of DNA or RNA that corresponds to a specific amino acid. The genetic code describes the relationship between the sequence of DNA bases (A, C, G, and T) in a gene and the corresponding protein sequence that it encodes. The cell reads the sequence of the gene in groups of three bases.

What is the second step of translation?

There are three important steps to the process of translation. There’s a beginning step, called initiation, a middle step, called elongation, and a final step, called termination.

What happens if there is no start codon?

Without a start codon, the process of translation would never begin. … Without the “start” codon, there would be no where for the gene to start being read. Without the “stop” codon, there would be nowhere for the gene to stop being read and the gene would keep getting read until another stop codon can be found.

What does R RNA stand for?

ribosomal ribonucleic acidAlternative Titles: rRNA, ribosomal ribonucleic acid. Ribosomal RNA (rRNA), molecule in cells that forms part of the protein-synthesizing organelle known as a ribosome and that is exported to the cytoplasm to help translate the information in messenger RNA (mRNA) into protein.

What are the steps in translation?

Translation proceeds in three phases:Initiation: The ribosome assembles around the target mRNA. The first tRNA is attached at the start codon.Elongation: The tRNA transfers an amino acid to the tRNA corresponding to the next codon. … Termination: When a stop codon is reached, the ribosome releases the polypeptide.

What must happen before transcription can occur?

Transcription is the first step of gene expression. During this process, the DNA sequence of a gene is copied into RNA. Before transcription can take place, the DNA double helix must unwind near the gene that is getting transcribed. The region of opened-up DNA is called a transcription bubble.

Where does translation happen?

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).

Where is RNA located in a cell?

There are two types of nucleic acids which are polymers found in all living cells. Deoxyribonucleic Acid (DNA) is found mainly in the nucleus of the cell, while Ribonucleic Acid (RNA) is found mainly in the cytoplasm of the cell although it is usually synthesized in the nucleus.

What do you need for translation to occur?

Translation requires the input of an mRNA template, ribosomes, tRNAs, and various enzymatic factors….tRNAsThey must be recognized by the correct aminoacyl synthetase.They must be recognized by ribosomes.They must bind to the correct sequence in mRNA.

What are the 3 stages of translation?

Translation of an mRNA molecule by the ribosome occurs in three stages: initiation, elongation, and termination.

What are the 5 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.

Which step in translation does not require energy?

Which of the following step of translation does not consume a high energy phosphate bond. Solution : a) Translocation means the shifting of ribosomes along m-RNA. This step requires elongation factor (Translocase) and simultaneously the hydrolysis of GTP takes place that provides energy for the translocation (not ATP).

Why is the process of translation important?

Translation is very important in the process of making proteins. Without transcription and translation, your body would have no possible way to make proteins, or function. Proteins allow your body to do everything. Muscle proteins allow your muscles to strengthen and grow.