Answer these correctly 9. Which of the following statements about hormones is co

Question

Answer these correctly

9. Which of the following statements about hormones is correct? A. Steroid and peptide hormones produce different effects but use thoe same biochemical mechanisms. Steroid and peptide hormones produce the same effects but differ in the mechanism that produce the effects B. C. Steroid hormones affect the synthesis of proteins, whereas peptide D. Steroid hormones affect the activity of certain proteins within the cell, E. Steroid hormones affect the synthesis of proteins to be exported from hormones affect the activity of proteins already present in the cell. whereas peptide hormones directly affect the processing of mRNA. the cell, whereas peptide hormones affect the synthesis of proteins that remain in the cell. 10.The second messenger that causes calcium ion to be released from intracellular stores is A. Diacylglycerol. B. Adenylyl cyclase. C. Inositol triphosphate. D. Phospholipase A E. None of the above. 11.Activation of a receptor that is coupled by G proteins to adenylyl cyclase A. May increase the intracellular concentration of cyclic AMP B. May decrease the intracellular concentration of cyclic AMP. C. May result in stimulation or inhibition of DNA transcription. D. A and B E. A, B and C. hormone producing cells to increase rapidly in number and to secrete their normal hormone but in abnormally large amounts. Which of the following is the most likely symptoms of such a tumor? A. Overproduction of calcitonin B. Overproduction melatonin C. Rapid growth of the thyroid. D. Very concentrated urine. E. Fatigue and lethargy. 12.A person has a tumor in an adrenal gland. The tumor causes certain

Explanation / Answer

9. Steroid hormones affect the synthesis of proteins, whereas peptide hormones affect the activity of
proteins already present in the cell.

10. inositol triphosphate

11. may increase in the intracellular concentration of cyclic AMP (cAMP). (Gs-protein-coupled receptor, GABAB receptor activation will enhance this increase in cAMP accumulation)

12. very concentrated urine (increase in aldosterone concentration causes create the renin-angiotensin-aldosterone system increase reabsorption of sodium, water retention)

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