What relationship does seroconversion have to the time course of an HIV infection?
What will be an ideal response?
Immediately after seroconversion, the levels of free virus decline, T-cell numbers rise, and for a time the infection is held in check. Eventually, however, virus levels start to rise again and T-cell numbers decrease, leading eventually to AIDS. The level of virus in the blood after seroconversion is positively correlated with the severity and progression of the disease: the more virus that remains at this time, the more rapid is the progress to AIDS.
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To promote weight management, the Institute of Medicine of the National Academy of Sciences recommends that people accumulate _____ of moderate-intensity physical activity most days of the week.
A. 20 minutes B. 30 minutes C. 60 minutes D. 90 minutes E. 10 minutes
John, an African American student, has chosen to incorporate exercise into his daily routine to prevent health issues. Based exclusively on his ethnicity, which of the following is the most likely basis for his decision?
A. high risk of developing lung cancer B. high risk of developing elevated blood pressure and obesity C. high risk of depression that leads to suicide D. high risk of gallbladder disease
Choose the correct suffix to use for terms that refer to inflammation.
A. -edema B. -scopy C. -itis D. -penia E. -ectasis
Which beverage is NOT a top source of caffeine in America?
A. hot chocolate B. coffee C. soft drinks D. tea