Which of the following hormones has the fewest targets?

Question

A.  growth hormone
B.  melatonin
C.  oxytocin
D.  thyroid-stimulating hormone
E.  testosterone

Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?

Gather Content
What do you already know about hormones? What other information is related to the question?

Choose Answer
Given what you now know, what information is most likely to produce the correct answer?

Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Answer 1

D.  thyroid-stimulating hormone

Clarify Question
What is the key concept addressed by the question?
        · Which hormone has the fewest targets?
What type of thinking is required?
            o This is an analyze question because you have to separately consider each hormone and list how many target tissues each one has.

Gather Content
What do you already know about hormones? What other information is related to the question?
        · Growth hormone (GH) has many targets. In fact, most cell types have GH receptors. Oxytocin primarily targets the uterus and mammary glands, but can also affect males without these structures. Melatonin targets the gonads, brain, and pigment cells. Testosterone targets male reproductive structures and many organs that effect the growth of secondary sex characteristics and puberty. Thyroid-stimulating hormone, as the name suggests, only stimulates the thyroid gland.

Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
        · Since all of the hormones affect multiple target tissues except thyroid-stimulating hormone (TSH), then TSH must be the hormone with the fewest targets.

Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
        Answering this question correctly depended upon understanding the targets for each of the given hormones. If you got the answer correct, wonderful! If not, which answer did you choose? Were you unclear on the targets of some of these hormones? Did you think that testosterone only affects the gonads in males or that oxytocin only affects the uterus and breasts of females?