Question

Помогите , вопрос по биологии : по данной цепи днк синтезируйте и-рнк ,т-рнк и белок. -тац-ццг-таг-гац-цгт-атг-ттц-атг-цга-цгт

Answer 1

И.РНК -ауг-ггц-ауц-цуг-гца-уац-ааг-уац-гцу-гца т.рнк-уац-ццг-уаг-гац-цгу-ауг-ууц-ауг-цга-цгу Белок мет-гли-иле-лей-ала-тир-лиз-тир-ала-ала

Answer 2

Synthesis of mRNA:

To synthesize mRNA from the given DNA sequence, we need to follow the rules of transcription. During transcription, the DNA sequence is used as a template to create a complementary mRNA molecule. The process involves the following steps:

1. Initiation: RNA polymerase binds to the DNA sequence at a specific region called the promoter. The DNA double helix unwinds, exposing the template strand.

2. Elongation: RNA polymerase moves along the template strand, synthesizing an mRNA molecule that is complementary to the DNA template. RNA nucleotides are added one by one, following the base-pairing rules (A-U, G-C). In the given DNA sequence, the complementary mRNA sequence would be:

- Template DNA: тац-ццг-таг-гац-цгт-атг-ттц-атг-цга-цгт - mRNA: ауг-гга-ауц-цуг-гца-уач-ааг-уач-гца-гца

3. Termination: Transcription continues until a termination signal is reached on the DNA template. At this point, the mRNA molecule is released, and the DNA double helix reforms.

Synthesis of tRNA:

tRNA (transfer RNA) molecules are responsible for carrying amino acids to the ribosomes during translation. Each tRNA molecule has an anticodon sequence that is complementary to the codon sequence on the mRNA. To synthesize tRNA from the given DNA sequence, we need to follow the rules of transcription and translation. The process involves the following steps:

1. Transcription: Transcribe the DNA sequence into mRNA using the steps mentioned above. The mRNA sequence we obtained earlier was: ауг-гга-ауц-цуг-гца-уач-ааг-уач-гца-гца.

2. Translation: During translation, the mRNA sequence is read by ribosomes, and tRNA molecules bring the corresponding amino acids to form a polypeptide chain. Each codon on the mRNA is recognized by a specific tRNA molecule with a complementary anticodon sequence. Using the genetic code, we can determine the amino acids carried by each tRNA molecule. Here is the tRNA sequence and the corresponding amino acids for the given mRNA sequence:

- mRNA: ауг-гга-ауц-цуг-гца-уач-ааг-уач-гца-гца - tRNA: уач-ццу-уау-ацг-цгу-ауг-ууа-угу-цгу-цгу - Amino acids: Met-Gly-Ile-Arg-Ser-Cys-Lys-Cys-Ala-Ala

Synthesis of Protein:

To synthesize a protein from the given DNA sequence, we need to follow the process of translation. Translation occurs in the ribosomes and involves the following steps:

1. Initiation: The ribosome binds to the mRNA molecule at the start codon (AUG) with the help of initiation factors. The first tRNA molecule carrying the amino acid methionine (Met) binds to the start codon.

2. Elongation: The ribosome moves along the mRNA molecule, reading each codon and bringing in the corresponding tRNA molecule with the appropriate amino acid. Peptide bonds form between adjacent amino acids, creating a growing polypeptide chain. The ribosome continues this process until it reaches a stop codon.

3. Termination: When a stop codon is reached, the ribosome releases the completed polypeptide chain, and the protein synthesis process is complete.

Using the tRNA sequence and the corresponding amino acids obtained earlier, we can synthesize the protein for the given DNA sequence:

- DNA: тац-ццг-таг-гац-цгт-атг-ттц-атг-цга-цгт - Protein: Met-Gly-Ile-Arg-Ser-Cys-Lys-Cys-Ala-Ala

Please note that the given DNA sequence does not specify the reading frame, so there may be multiple possible protein sequences depending on the reading frame chosen.

I hope this helps! Let me know if you have any further questions.