Final answer:
The endoplasmic reticulum and Golgi apparatus are the organelles that work together to assemble protein chains and transport them within a cell.
Step-by-step explanation:
Organelles Involved in Protein Synthesis and Transport: The organelles involved in assembling protein chains and transporting them are the endoplasmic reticulum (ER) and the Golgi apparatus. Here is how these organelles work together in the process:
- The nucleus contains the cell's DNA, which holds the instructions for protein synthesis.
- Ribosomes, which can either be found floating freely in the cytoplasm or attached to the rough endoplasmic reticulum (RER), are the sites of protein synthesis.
- The RER helps in the modification of proteins and also plays a role in their transport.
- Modified proteins are then packaged into vesicles and sent to the Golgi apparatus for further processing, tagging, and sorting.
- Finally, proteins are dispatched to their destination inside or outside the cell.
The correct answer to the question is: A. Endoplasmic reticulum and Golgi apparatus.