Question

endoplasmic reticulum with ribosomes attached to it is called:
a dendritic er
b nodular er
c bumpy er
d smooth er
e rough er

Explanation:

The endoplasmic reticulum (ER) is of two types: smooth ER (without ribosomes) and rough ER (with ribosomes attached). Ribosomes give it a 'rough' appearance under a microscope. The other options (dendritic ER, nodular ER, bumpy ER) are not standard biological terms for ER types.

Answer:

E. rough ER