Questions: Endoplasmic reticulum with ribosomes attached to it is called ER.
Smooth
Nodular
Bumpy
Rough
Transcript text: Endoplasmic reticulum with ribosomes attached to it is called $\qquad$ ER.
Smooth
Nodular
Bumpy
Rough
Solution
The answer is the fourth one: Rough.
Explanation for each option:
Smooth: This refers to the smooth endoplasmic reticulum, which lacks ribosomes on its surface. Therefore, it is incorrect.
Nodular: This is not a standard term used to describe types of endoplasmic reticulum. Therefore, it is incorrect.
Bumpy: While this might describe the appearance of the rough endoplasmic reticulum, it is not the correct scientific term. Therefore, it is incorrect.
Rough: This is the correct term for endoplasmic reticulum with ribosomes attached to it, giving it a "rough" appearance under a microscope. Therefore, it is correct.
Summary: The endoplasmic reticulum with ribosomes attached to it is called Rough ER.