Why is it not possible for HIV medications to eliminate HIV in a confirmed HIV-positive patient?
What will be an ideal response?
Once a person has been confirmed as HIV-positive, the virus has already infected the cells. Although medications can limit the further infection of new host cells, it cannot do anything about the cells that are already infected. Most drugs are aimed at preventing replication of HIV.
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Two species utilizing the same food source is an example of ____
a. coevolution b. mimicry c. interference competition d. exploitative competition e. mutualism
The above figure represents
a. membrane attack complex; pores in bacterial cell b. macrophage attack complex; fluids released from pores c. pores for mucus secretion ciliated lung tissue d. macrophages; muscle tissue e. none of these
FALSEA sperm or egg has twice as many chromosomes as its parent cell.
a. true b. false
A person may have a muscle injury that really affects the tendon and not the muscle tissue itself. Why is it that after a hard workout, muscle pain will go away in a few days at most, but tendinitis lasts so much longer?
A) The electrical signals that muscle cells generate are used to aid in healing. B) Muscle cells can be rested, but tendons have to be used all the time. C) Unlike a tendon, muscle tissue has an ample blood supply, so it's easier to repair. D) Muscle cells are more elastic, so they are harder to damage.