Question

station 9: endoplasmic reticulum
the endoplasmic reticulum is a __________ network of tiny __________.
smooth er makes ____________ for tasks such as:

• ____________ regulation
• ____________

smooth er also makes ____________.
rough er helps to make __________, and serves as a __________ for the proteins to travel.
__________ has ribosomes on its surface, but __________ does not.

Explanation:

The endoplasmic reticulum (ER) is an important organelle in cells. The smooth ER is involved in lipid - related functions and detoxification, while the rough ER is associated with protein synthesis and transport. The key is to recall the basic functions and structural differences between smooth and rough ER.

• The endoplasmic reticulum is a membranous network of tiny tubes.
• Smooth ER makes lipids for tasks such as calcium regulation and detoxification. It also makes steroids.
• Rough ER helps to make proteins and serves as a transport system for the proteins to travel. Rough ER has ribosomes on its surface, but smooth ER does not.

Answer:

The endoplasmic reticulum is a membranous network of tiny tubes.
Smooth ER makes lipids for tasks such as calcium regulation and detoxification. Smooth ER also makes steroids.
Rough ER helps to make proteins, and serves as a transport system for the proteins to travel.
Rough ER has ribosomes on its surface, but smooth ER does NOT.