0
What dictates the corresponding sequence of amino acids in a growing polypeptide chain?
Wiki User
∙ 11y ago
The sequence of amino acids being added to the growing polypeptide chain is controlled by the instructions (codons, 3-base codes) on the mRNA. These are a copy of the coding regions of the gene from the DNA in the nucleus.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What regions of a ribosome holds the growing polypeptide?
The P site
What r two basic steps of polypeptide synthesis?
The 2 basic steps of polypeptide synthesis are:Transcription - the synthesis of mRNA from a DNA template. Only one strand of DNA is copied, and a single gene may be transcribed thousands of times.Translation - the process where ribosomes synthesize proteins using the mature mRNA transcript produced during transcription. The ribosome attaches to mRNA, and then moves along the mRNA adding amino acids to the growing polypeptide chain.
Why methionine is the first amino acid in every growing polypeptide?
Start Codon Methionine's code is AUG which is also a start codon causing initiation of translation.
What tRNA know what amino acid is coded on the m RNA?
Every three bases on an mRNA molecule is known as a codon. The tRNA molecules have corresponding base pairs called an anticodon that will only pair up with the codons on mRNA. In this way mRNA specifies the amino acid that tRNA brings next in the sequence on the growing peptide chain.
What is the RNA molecule that transfers amino acids to the growing end of a polypeptide chain during translation?
quite easy to remember ....tRNA ie transfer Rna.
What happens to the growing of polypeptide?
It will either continue growing, or develop into a functional protein.
What places the amino acid on the growing polypeptide chains?
Ribo
What regions of a ribosome holds the growing polypeptide?
The P site
When does the polypeptide stop growing?
It reaches a stop codon on the mRNA molecule
Amino acids are transferred to the ribosome to be incorporated into a growing polypeptide chain by?
tRNA
What is used during RNA translation.?
mRNA- a transcript of DNA which serves as instuctions for polypeptide formation. amino acid- a single buildin block of protein. tRNA- a molecule that carries a specific amino acid and recognizes its complementary base sequence on an mRNA strand. ribosome- an organelle which serves as the "factory" where amino acids are addes to a growing polypeptide chain.
The step of translation in which amino acids are added one at a time to the growing polypeptide is?
elongation
How many monomers are added to the growing polypeptide or protein chain in each step?
four
What is the purpose of a transfer RNA?
To carry the next amino acid to be added to a growing polypeptide chain during translation process that takes place in the ribosomes.
What types of bonds are the ones that attach amino acids to each other in a growing polypeptide?
They are amide bonds -covalent. When an amino acid reacts with another, the carboxylic acid reacts with the amine forming an amide.
Cluster of three nucleotides?
A cluster of three nucleotides is called a 'codon' - However, the term is only really used to refer to refer to a 3 nucleotide sequence on an mRNA molecule. Codons provide a means by which charged tRNA molecules can specifically add amino acids to a growing polypeptide chain. tRNA molecules have the complementary 3 nucleotide sequence (anticodon) that allow the specific recognition.
What is a anticodons?
A sequence of three nucleic acid bases on transfer RNA molecules which recognizes and binds to three corresponding bases (called a codon) of messenger RNA. During protein synthesis this interaction ensures that the amino acid encoded by the codon is added to the growing protein.
