A decreased response to the same amount of a drug after repeated administrations is called:

All of the following are true about the classical pathway except

a. Begins with formation of C1 from C1q, C1r, and C1s molecules b. Consists of C5b and C6-C9 c. Is regulated by two mechanisms in the fluid phase d. Is regulated on cell surfaces with complement control proteins

As crystal size increases, resolution

a. increases. b. decreases. c. increases exponentially. d. is unaffected