TRUE OR FALSE> IF TRUE SHADE A IF FALSE SHADE B 31. 32. 33. 34. 35. A hormone ca

Question

TRUE OR FALSE> IF TRUE SHADE A IF FALSE SHADE B 31. 32. 33. 34. 35. A hormone carries out a single specific function. Serotonin is derived from tryptophan. Hormones regulate certain activities of the immune system. Aldosterone is synthesized from cholesterol Steroid hormones are stored and then released in pulsatile fashion. 36. Thyroid hormone is classified as a steroid. 37. Hormone receptors are always located on the cell 38. The secretion of most hormone is controlled by a positive 39. Hormones are usually released in large quantities into the 40. The enzyme catchol-o-methyl transferase(COMT) in the membrane. feedback system. blood stream. nervous system is important in the degradation of catcholamines by neuroglia cells

Explanation / Answer

31 - TRUE.

32 - TRUE.  First, brain tryptophan is converted to 5-hydroxytryptophan by the tryptophanhydroxylase enzyme (the rate-limiting step of serotonin synthesis). Second, 5-hydroxytryptophan is converted to serotonin by the aromatic amino acid decarboxylase enzyme.

33 - TRUE

34 - TRUE. Aldosrone is synthesized in the body from corticosterone , a steriod derived from cholesterol.

35 - FALSE

36 - TRUE

37 - TRUE .Receptors for peptide hormones are locatedon the plasma membrane because they have bound to areceptor protein located on the plasma membrane.

38 - FALSE .The thyroid gland is a good example of this type of regulation. It is controlled by the negative feedback system.

39 - TRUE

40 - TRUE

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