Explain the difference between identical twins and fraternat twins

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.

97. what function do many of the b vitamins have in common? a. the body to process iron b. the body to build collagen c. the body to release energy from carbohydrates d. can cause birth defects if consumed in excess amounts

Which of the following foods would be the best choice for someone who's lactose-intolerant?   a.  frozen yogurt    b.  strawberry sorbet    c.  cheesecake    d.  chocolate ice cream