Final answer:
Endomembranes are involved in the synthesis and transport of proteins. The endomembrane system includes components like the ER and Golgi apparatus which modify, package, and transport proteins after their synthesis on ribosomes.
Step-by-step explanation:
Which statement correctly describes an endomembrane function? The correct answer is d. Endomembranes participate in the synthesis and transport of proteins.
The endomembrane system is a complex group of membranes and organelles in eukaryotic cells that work together to modify, package, and transport lipids and proteins. It includes several cellular components such as the nuclear envelope, the endoplasmic reticulum (ER), the Golgi apparatus, lysosomes, vesicles, and although not technically an organelle, the plasma membrane due to its functional interactions with other endomembranous organelles.
During protein synthesis, DNA in the nucleus is transcribed into RNA, which exits the nucleus and enters the cytoplasm. Ribosomes on the rough ER use the RNA to create proteins that the body needs. These proteins are then packaged into vesicles and transported to the Golgi apparatus for further modification and sorting for their final destinations inside or outside the cell.