Which one of the following is wrongly matched?a)Transcription-Writing information from DNA to tRNAb)Translation-Using information in mRNA to make proteinc)Repressor protein-Binds to operator to stop enzyme synthesisd)Operon-Structural genes, operator and promoterCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

DNA-->DNA is Replication....DNA-->RNA is Transcription....RNA-->DNA is Reverse Transcription....RNA-->Protiens is Translation....

Answer

A is wrong . this is the formation of mRNA from DNA

Answer

Transcription is a process of formation of mRNA from DNA

Answer

The answer is first option
transcription is DNA to mRNA
It was given as DNA to tRNA

Answer

Transcription is the process of conversion of DNA to mRNA. Only the mRNA can undergo translation and code for proteins.

Answer

Transcription-Writing information from DNA to tRNA
Transcription is the process by which genetic information stored in DNA is transferred to RNA molecules. During transcription, the DNA double helix unwinds and one of the DNA strands acts as a template for the synthesis of a complementary RNA molecule. The RNA molecule produced is called messenger RNA (mRNA).

Translation-Using information in mRNA to make protein
Translation is the process by which the information encoded in the mRNA molecule is used to synthesize a specific protein. It occurs in the ribosomes, where transfer RNA (tRNA) molecules bring amino acids to the ribosome according to the sequence of codons on the mRNA. The ribosome then catalyzes the formation of peptide bonds between the amino acids, resulting in the synthesis of a protein.

Repressor protein-Binds to operator to stop enzyme synthesis
A repressor protein is a regulatory protein that binds to the operator region of an operon. The operon is a segment of DNA that consists of structural genes, an operator, and a promoter. The operator acts as a switch that controls the transcription of the structural genes. When a repressor protein binds to the operator, it prevents the binding of RNA polymerase to the promoter region, thereby inhibiting the synthesis of enzymes encoded by the structural genes.

Operon-Structural genes, operator and promoter
An operon is a functional unit of DNA that consists of a cluster of genes controlled by a single promoter and operator. It includes the structural genes, which encode proteins with related functions, as well as the operator and promoter regions. The operator region controls the transcription of the structural genes by interacting with regulatory proteins, such as repressor proteins. The promoter region is the site where RNA polymerase binds to initiate transcription.

Explanation:
The correct match is option 'C' - Transcription is the process of synthesizing RNA from DNA, not tRNA. tRNA is involved in translation, not transcription. Therefore, option 'A' is wrongly matched. The other options are correctly matched: translation involves using mRNA to synthesize proteins, the repressor protein binds to the operator to stop enzyme synthesis, and the operon consists of structural genes, operator, and promoter.

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