A researcher incubates a cell with radiolabeled amino acids. These amino acids are incorporated into the proteins as they are synthesized by the cell. Select which piece of data would indicate the incorporation of radiolabeled amino acids during protein synthesis? A) Radioactivity levels would increase first at the nucleus, followed by the Golgi, and then the cell membrane. B) Radioactivity levels would increase first at the nucleus, followed by the ribosomes, and then the secretory vesicles. C) Radioactivity levels would increase first at the rough endoplasmic reticulum, followed by the Golgi, and then the secretory vesicles. D) Radioactivity levels would increase first at the rough endoplasmic reticulum, followed by the nucleus, and then the secretory vesicles.

During an investigation, the addition of radiolabeled amino acids during protein synthesis occurs when the data shows high levels of radiation in protein synthesis, packaging and transport, which is equivalent to saying that radioactivity levels would first increase in the rough endoplasmic reticulum, followed by the Golgi and then the secretory vesicles (option C).

Explanation:

Protein synthesis in the cell is a process that involves the formation of polypeptide chains with the successive incorporation of amino acids.

RNA, which contains the sequence of triplets or codons that form the genetic code, is coupled to the ribosomes. Each codon or triplet consists of three nucleotides and encodes specific amino acids.

The RNA chain contains a specific nucleotide sequence and determines the assembly of amino acids to a polypeptide chain, by the action of ribosomes present in the rough endoplasmic reticulum.

In the Golgi apparatus, the proteins formed are conjugated, with the addition of carbohydrates or lipids, and arranged in secretory vesicles for transport.

In these steps, where the labeled amino acids are present, the levels of radioactivity would increase in the rough endoplasmic reticulum, the Golgi apparatus and the secretory vesicles.

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Protein synthesis steps link