Multiple Choice
Some people cannot be infected with HIV because
A) they are already infected.
B) their cells lack receptors that admit the virus.
C) their cells have extra receptors for HIV.
D) they were vaccinated.
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q57: Bone cells and muscle cells differ in
Q58: Solutions that have a higher osmotic pressure
Q59: If a human cell has 23 chromosomes,
Q60: Programmed cell death occurs during development, including
Q61: The movement of molecules through a membrane
Q63: Krabbe disease results from an abnormality that
Q64: Chromatin consists of DNA and protein.
Q65: The function of the nucleus is to<br>A)direct
Q66: Chromosomes duplicate during<br>A)prophase.<br>B)interphase.<br>C)metaphase.<br>D)telophase.
Q67: A young man who ran 6 miles