Choices: -- plasma membrane. -- nucleus. -- mitochondria. -- endoplasmic reticulum.

Answer the following question given this paragraph: The endoplasmic reticulum (ER) is an organelle that helps make and transport proteins and lipids. It's made of folded membranes. Bits of membrane can pinch off to form tiny sacs called vesicles. The vesicles carry proteins or lipids away from the ER. Q: What is the name of the organelle that helps make and transport proteins and lipids? A:
Answer:
endoplasmic reticulum