Questions: Compared to young adults, the elderly usually have levels of circulating growth hormone and levels of circulating sex hormones. Multiple Choice higher, higher lower, higher lower, lower higher, lower

The answer is the third one (lower, lower): lower levels of circulating growth hormone and lower levels of circulating sex hormones.

Explanation for each option:

• Higher, higher: This is incorrect because both growth hormone and sex hormone levels typically decline with age.
• Lower, higher: This is incorrect because while growth hormone levels do decrease with age, sex hormone levels also tend to decrease in the elderly.
• Lower, lower: This is correct because it accurately reflects the physiological changes that occur with aging. Both growth hormone and sex hormone levels generally decrease as people age.
• Higher, lower: This is incorrect because growth hormone levels do not increase with age; they decrease.

Summary: Compared to young adults, the elderly usually have lower levels of circulating growth hormone and lower levels of circulating sex hormones.