Question

which organelle is labeled as # 8? *
nucleus
smooth endoplasmic reticulum
rough endoplasmic reticulum
vacuole
what organelle is labeled as # 13? *
centromere
centriole
golgi apparatus
lysosome

Explanation:

• For the first question: The smooth endoplasmic reticulum (SER) is a membrane - bound organelle. It has a smooth appearance (no ribosomes attached) which is characteristic of the SER.
• For the second question: Centrioles are cylindrical organelles. They play important roles in cell division, such as organizing the spindle fibers.

Answer:

• First question: smooth endoplasmic reticulum
• Second question: centriole