Question

rough er
smooth er
golgi apparatus
vesicle

Explanation:

Identify the highlighted organelle

The image shows a 3D cell model with several labeled structures. A bracket on the left side points to a specific organelle. The bracket labeled "E" points directly to the folded, tubular membrane network that lacks ribosomes on its surface, located adjacent to the rough endoplasmic reticulum. This smooth, tubular network represents the smooth endoplasmic reticulum (Smooth ER).

Analyze the options

Let's evaluate the multiple-choice options to find the correct match for the pointed organelle:

• Rough ER: This organelle is studded with ribosomes, giving it a bumpy appearance. It is located closer to the nucleus (labeled with a different letter).
• Smooth ER: This organelle consists of a network of tubules without ribosomes, which matches the structure pointed to by bracket E.
• Golgi Apparatus: This consists of flattened membranous sacs (cisternae) located further from the nucleus, typically colored orange/pink or red in this model (labeled near the top right).
• Vesicle: These are small, spherical membrane-bound sacs used for transport, visible as small blue spheres.

Confirm the correct label

Bracket E clearly brackets the tubular, smooth-surfaced membrane system, which is the Smooth ER.

Answer:

• Rough ER
• Smooth ER (Correct answer)
• Golgi Apparatus
• Vesicle