Question 1
Question detail
What is the role of negative feedback in the regulation of thyroxine levels?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Hormonal coordination in humans
Question
- A. It increases thyroxine production when levels are high
- B. It decreases thyroxine production when levels are low
- C. It maintains stable thyroxine levels
- D. It has no role in thyroxine regulation
Answer
The correct option is It maintains stable thyroxine levels. This answer is correct because it matches the approved learning objective to describe (HT only) thyroxine as a hormone from the thyroid gland that stimulates basal metabolic rate in the subtopic Feedback systems (HT only).
Explanation
The correct option is It maintains stable thyroxine levels. It maintains stable thyroxine levels is correct because it directly supports the approved learning objective to describe (HT only) thyroxine as a hormone from the thyroid gland that stimulates basal metabolic rate. This belongs to the subtopic Feedback systems (HT only) within Hormonal coordination in humans, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Feedback systems (HT only).
Common mistake
Thyroxine Function Misunderstanding
Students often confuse thyroxine's role in stimulating the basal metabolic rate with its role in growth and development.
Focus on understanding that thyroxine primarily regulates metabolism, while its effects on growth and development are secondary. Clarify the specific functions of thyroxine in metabolic processes.
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