**Core Concept**
Chaperones are proteins that assist in the proper folding and assembly of other proteins, often preventing aggregation and maintaining cellular homeostasis. This process is crucial in maintaining protein function and preventing disease. Chaperones can be molecular or cellular, and their functions are essential in various cellular processes.

**Why the Correct Answer is Right**
Chaperones work by binding to unfolded or partially folded proteins, thereby stabilizing their structure and facilitating their correct folding. This process is mediated by molecular chaperones such as Hsp70 and Hsp90, which interact with specific protein sequences to prevent misfolding and aggregation. Chaperones play a vital role in maintaining protein homeostasis, which is critical for cellular function and overall health.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe chaperones. While chaperones do assist in protein folding, they are not the same as enzymes, which catalyze specific chemical reactions.
**Option B:** This option is incorrect because it is too vague and does not specifically refer to the function of chaperones. While proteins can have various functions, chaperones are specifically involved in protein folding and assembly.
**Option C:** This option is incorrect because it is not a recognized term in the context of protein biology. Chaperones are a well-defined group of proteins with specific functions, and this option does not accurately describe them.

**Clinical Pearl / High-Yield Fact**
Chaperones play a crucial role in preventing protein misfolding and aggregation, which can lead to various diseases, including neurodegenerative disorders such as Alzheimer's and Parkinson's disease. Understanding the function of chaperones is essential for developing therapeutic strategies to prevent or treat these diseases.

**Correct Answer: C. Cellular receptors.