Home › SMLE (Saudi Medical Licensing) › Physiology › The Endocrine System › Testosterone, aldosterone and cortisol are all b…
Testosterone, aldosterone and cortisol are all built from which precursor?
AThe lipid cholesterol
BThe amino acid tyrosine
CThe amino acid tryptophan
DThe glycoprotein thyroglobulin
Answer & Solution
Correct answer: A. The lipid cholesterol
1. Testosterone from the gonads, and aldosterone and cortisol from the adrenal glands, are all steroids.
2. Steroid hormones are lipid derived, and their lipid of origin is cholesterol.
3. Tyrosine and tryptophan start amine hormones instead, which are a separate chemical class.
4. Thyroglobulin is the colloid glycoprotein that iodine attaches to inside thyroid follicles.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 17 "The Endocrine System", section 17.2 Hormones_
Related questions
From which embryonic tissue does the anterior pituitary gland arise?The kidneys release erythropoietin in response to what?Stretching of the atrial wall releases atrial natriuretic peptide. What does that hormone Glucagon makes the liver take up amino acids and convert them into glucose. What is this rWhich cells take up glucose without needing insulin at all?Insulin appears to act through which kind of receptor?Insulin raises glucose uptake mainly through which cellular action?Between which two values is blood glucose concentration tightly maintained?