One of the distinguishing characteristics between hiv and aids is the
a. length of time since the hiv infection.
b. mode of transmission of the hiv infection.
c. development of opportunistic infections.
d. types of treatment available.

The world’s richest 20 percent of the population consume about what percentage of all goods and services in a given year?

Christopher came down with chicken pox after spending time in his child’s day care. the chicken pox represents what link in the chain of transmission in this scenario?

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer