Louisiana Esthetics State Board Practice Test

What are organelles best described as?

1. Living organisms within the body

2. Small organs of the cell performing specific functions

3. Parts of the cell membrane that protect the cell

4. Cells that join to form tissues

The correct answer is: Small organs of the cell performing specific functions

Organelles are best described as small organs of the cell that perform specific functions. This characterization highlights that organelles are specialized structures within a cell that carry out distinct tasks essential for maintaining the cell's life and functionality. Examples of organelles include the mitochondria, which are responsible for energy production, and the endoplasmic reticulum, which plays a role in protein and lipid synthesis. This definition emphasizes the idea that, like organs in a larger organism, organelles work together to ensure the cell operates smoothly and efficiently. The other options do not accurately represent organelles: they are not living organisms, nor are they parts of the cell membrane or cells that combine to form tissues. Instead, they individually contribute to the overall functioning of the cell, much like how each organ contributes to the health of an organism.