Which of the Following Molecules Derived from Tyrosine Is Correctly

question 20

Multiple Choice

Which of the following molecules derived from tyrosine is correctly defined?

• A)dopamine: thyroid hormone
• B)dopaquinone: precursor for melanins
• C)thyroxine: catecholamine
• D)norepinephrine: thyroid hormone
• E)all of the above

---

Definitions:

Exercise

Physical activities intended to improve strength, fitness, and wellbeing, ranging from walking and swimming to weightlifting and yoga.

Sleep-wake Disorders

Disorders affecting the quality, timing, and amount of sleep, leading to distress and impairment during waking hours.

Insomnia

A common sleep disorder characterized by trouble falling asleep, staying asleep, or achieving restorative sleep, leading to daytime impairments.

Narcolepsy

A sleep-wake disorder characterized by a repeated sudden and irrepressible need to sleep during waking hours.