Question

proteins serve numerous roles in the human body. part of the biological process for making proteins is shown in the image. based on the image, which of these best describes the structure and function of the organelle identified as x? a endoplasmic reticulum, which carries nucleotides as a dna strand is being transcribed b endoplasmic reticulum, which carries nucleotides as a dna strand is being translated c ribosome, which holds the mrna in place as amino acids are transported by trna d ribosome, which holds the trna in place as amino acids are transported by mrna

Explanation:

• The endoplasmic reticulum is not involved in the process shown (transcription or translation of proteins in the way described in options A and B).
• Ribosomes are the sites of protein synthesis. During translation, mRNA is held in place by the ribosome, and tRNA brings amino - acids to the ribosome. Option C correctly describes this. Option D has the wrong molecule (it should be mRNA held in place, not tRNA).

Answer:

C. Ribosome, which holds the mRNA in place as amino acids are transported by tRNA