If brain cells die quickly if a stroke occurs, then what die quickly if a stroke occurs? Answer choices: - a fish - animals - brain cells - organs - critical organs - protons - neutrons - bones
brain cells

If populations of HIV do not grow through cell division because they are not cells, then what does not grow through cell division? Answer choices: - p53 - AIDS - host - DDT - lung - HIV - corn - HPV
HIV

If biofuel is used to produce energy, then what is biofuel used to produce? Answer choices: - disease - chemicals - waste - bamboo - engines - sleep - energy - food
energy