Which of the following is characteristic of all leukocytes?
a. they are phagocytic.
b. they are the most numerous of the formed elements in blood.
c. they are nucleated.
d. they have cytoplasmic granules.

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.