What percentage of someone’s genetic background may contribute to alcohol dependency? 1) 25% 2) 50% 3) 75% 4) 100%

Which of the following events will occur when you stab yourself with a dirty nail? (select all that apply.) a. attraction of neutrophils to the wound. b. local secretion of cytokines. c. activation of the complement pathway. d. vasoconstriction of local capillaries to confine the bacteria.

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

List several ways that negative life events (death in the family, being laid off, etc) may affect your physical health.