Which of the following is a known effect of thyroid hormone on peripheral tissues?

• A. Decreased oxygen consumption
• B. Inhibition of mitochondrial activity
• C. Increased basal metabolic rate
• D. Suppression of protein synthesis

Answer: (C)

Verified step by step guidance

1. Understand the role of thyroid hormones: Thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), are critical regulators of metabolism in the body. They influence various physiological processes, including energy production, protein synthesis, and oxygen consumption.
2. Analyze the options provided: Evaluate each option based on the known effects of thyroid hormones. For example, thyroid hormones generally increase oxygen consumption and mitochondrial activity, which are essential for energy production.
3. Focus on basal metabolic rate: Thyroid hormones are well-known for their role in increasing the basal metabolic rate (BMR). BMR refers to the amount of energy expended by the body at rest to maintain vital functions such as breathing and circulation.
4. Eliminate incorrect options: Decreased oxygen consumption and inhibition of mitochondrial activity are contrary to the effects of thyroid hormones, as these hormones stimulate energy production and oxygen utilization. Similarly, suppression of protein synthesis is not consistent with the anabolic effects of thyroid hormones.
5. Conclude with the correct answer: Based on the physiological effects of thyroid hormones, the correct answer is 'Increased basal metabolic rate,' as it aligns with their role in enhancing metabolic activity in peripheral tissues.