Which pair is correct regarding the ovarian hormones?

Options

A. Progesterone `to` steroid
Estrogen `to` Protein
B. Progesterone + Estrogen `to` Protein
C. Progesterone + Estrogen `to` Steroid
D. Progesterone `to` Protein Estrogen `to` Steroid

Answer

To determine which pair is correct regarding the ovarian hormones, we can follow these steps:

### Step 1: Identify the Ovarian Hormones
The primary ovarian hormones are progesterone and estrogen.

### Step 2: Determine the Nature of These Hormones
Both progesterone and estrogen are classified as steroid hormones. Steroid hormones are derived from cholesterol and are lipid-soluble.

### Step 3: Analyze the Options Provided
1. **Option 1**: Progesterone is a steroidal hormone, estrogen is a protein hormone.
- This is incorrect because while progesterone is a steroid hormone, estrogen is also a steroid hormone, not a protein hormone.

2. **Option 2**: Progesterone and estrogen both are proteinaceous hormones.
- This is incorrect because both hormones are steroidal, not proteinaceous.

3. **Option 3**: Progesterone and estrogen are both steroidal hormones.
- This is correct as both hormones are indeed steroid hormones.

4. **Option 4**: Progesterone is a protein and estrogen is a steroid.
- This is incorrect because progesterone is not a protein; it is a steroid hormone.

### Step 4: Conclusion
The correct answer is **Option 3**, which states that both progesterone and estrogen are steroidal hormones.

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