Question

Choose the mismatched pair.

• A. Amine hormone -- Thyroxine
• B. Peptide hormone -- Oxytocin
• C. Protein hormone -- Testosterone
• D. Steroid hormone -- Progesterone

Hint:

Classification of hormones: \[ \boxed{ \begin{aligned} &\text{Amine} &&\rightarrow \text{Thyroxine} &\text{Peptide} &&\rightarrow \text{Oxytocin} &\text{Steroid} &&\rightarrow \text{Testosterone, Progesterone} \end{aligned} } \]

Answer 1

The Correct Option is C

Step 1: Examine each pair. \[ \begin{aligned} \text{Thyroxine} &\rightarrow \text{Amine hormone} \quad \checkmark \text{Oxytocin} &\rightarrow \text{Peptide hormone} \quad \checkmark \text{Testosterone} &\rightarrow \text{Steroid hormone} \quad \times \text{Progesterone} &\rightarrow \text{Steroid hormone} \quad \checkmark \end{aligned} \]

Step 2: Identify the mismatched pair. Testosterone is synthesized from cholesterol and belongs to the class of \[ \boxed{\text{Steroid hormones}} \] and not protein hormones.

Step 3: Choose the correct option. Hence, \[ \boxed{(C)} \] is the correct answer.