Hormone receptors on the target tissue are made up of

Options

A. lipids
B. carbohydrates
C. Proteins
D. All of these

Answer

To answer the question "Hormone receptors on the target tissue are made up of," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Hormone Receptors**:
- Hormone receptors are specialized proteins located on the surface or inside target cells. They bind to specific hormones, allowing the cells to respond to those hormones.

2. **Identifying the Composition of Hormone Receptors**:
- The primary components of hormone receptors are proteins. These proteins are essential for the binding and signaling processes that occur when hormones interact with their receptors.

3. **Considering Other Possible Components**:
- While proteins are the main component, some hormone receptors can also be influenced by other molecules such as fatty acids and prostaglandins. However, these are not the primary building blocks of the receptors themselves.

4. **Evaluating the Options**:
- The options provided are lipids, carbohydrates, proteins, or all of these. Since we established that the majority of hormone receptors are made of proteins, we can conclude that the best answer is proteins.

5. **Final Answer**:
- Therefore, the hormone receptors on the target tissue are primarily made up of proteins.