Which statement about human immunodeficiency virus (HIV) and acquired immune deficiency syndrome (AIDS) is true?
a. Everyone with AIDS has HIV infection but not everyone with HIV infection has AIDS.
b. Everyone with HIV infection eventually dies of it because the disease cannot be cured.
c. With successful antiretroviral therapy, HIV-infected patients become HIV-antibody negative.
d. When HIV disease becomes AIDS, the infection is in the blood and treatment must be given intravenously.
Question 2
How are viral infections different from bacterial infections?
a. Bacterial infections can be spread from one person to another, whereas viral infections cannot be spread directly.
b. Bacterial infections can be cured by treatment with some anti-infective drugs, whereas viral infections are not cured by anti-infective therapy.
c. Viruses only cause disease in a person who is immunocompromised, whereas bacteria can cause disease even among immunocompetent people.
d. Viruses are the less mature form of a bacterium, so there is essentially no difference between viral infections and bacterial infections.
Development of the human brain.
Deformation in human bones caused by (a) rickets and (b) osteoporosis.
The ovarian and uterine cycles in a human female.
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Pedigree of fragile X syndrome