Endocrine Glands
Mediumbiology
Which of the following hormones is not a steroid hormone?
Select the correct option:
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About This Question
- Subject
- biology
- Chapter
- chemical coordination and integration
- Topic
- endocrine glands
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Thyroxine
- Steroid Hormones: These are derived from cholesterol and include cortisol, testosterone, progesterone, and estradiol.
- Iodothyronines: Thyroxine (T4) and Triiodothyronine (T3) are produced by the thyroid gland and are amino acid (tyrosine) derivatives laden with iodine.
- Other types: Peptide/protein hormones (Insulin, Glucagon) and Amino-acid derivatives (Adrenaline).
- Conclusion: Thyroxine is not a steroid hormone.
This medium difficulty biology question is from the chapter chemical coordination and integration, covering the topic of endocrine glands. It appeared in the 2025 exam.
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