Many people become infected with the chicken pox virus during childhood. After recovering from chicken
pox, these people are usually immune to the disease
for the rest of their lives. However, they may still be
infected by viruses that cause other diseases, such as
measles.
Discuss the immune response to the chicken pox virus,
In your answer, be sure to include:
• the role of antigens in the immune response
• the role of white blood cells in the body's
response to the virus
• an explanation of why recovery from an
infection with the chicken pox virus will not
protect a person from getting a different
disease, such as measles
• an explanation of why a chicken pox
vaccination usually does not cause a person to
become ill with chicken pox

Chicken pox and hepatitis are bacterial diseases. true or false?

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

The accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. the accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. chimpanzees and gibbons are the most closely related the chimpanzee's closest surviving relative is humans orangutans are the primates least closely related to chimpanzees old world monkeys and gibbons are the most closely related