What factor primarily influences the number of proteins produced from a single strand of mRNA?

What factor primarily influences the number of proteins produced from a single strand of mRNA?

• A. The availability of ribosomes
• B. The rate of mRNA degradation
• C. The type of amino acids present
• D. The location of transcription

Answer: (B)

The number of proteins produced from a single strand of mRNA is primarily influenced by the rate of mRNA degradation. Once mRNA is transcribed from DNA, it enters the translation phase where ribosomes synthesize proteins. However, the lifespan of the mRNA molecule in the cytoplasm plays a crucial role in determining how many times it can be translated into a protein. If mRNA degrades rapidly, it will have limited time for ribosomes to bind and translate the message into protein, resulting in fewer proteins being produced. Conversely, if the mRNA is stable and persists longer in the cytoplasm, it can be translated multiple times, leading to a higher yield of protein synthesis. Factors affecting the stability and degradation of mRNA, such as the presence of specific sequences in its structure or RNA-binding proteins, ultimately regulate the quantity of protein synthesis.

The number of proteins produced from a single strand of mRNA is primarily influenced by the rate of mRNA degradation. Once mRNA is transcribed from DNA, it enters the translation phase where ribosomes synthesize proteins. However, the lifespan of the mRNA molecule in the cytoplasm plays a crucial role in determining how many times it can be translated into a protein.

If mRNA degrades rapidly, it will have limited time for ribosomes to bind and translate the message into protein, resulting in fewer proteins being produced. Conversely, if the mRNA is stable and persists longer in the cytoplasm, it can be translated multiple times, leading to a higher yield of protein synthesis. Factors affecting the stability and degradation of mRNA, such as the presence of specific sequences in its structure or RNA-binding proteins, ultimately regulate the quantity of protein synthesis.