McGraw-Hill's 5 NLN PAX-RN Practice Tests by Joseph Brennan

Author:Joseph Brennan
Language: eng
Format: epub
Publisher: McGraw Hill LLC
Published: 2013-03-15T00:00:00+00:00

56. Aluminum (Al) has 13 protons in its nucleus. What is the number of electrons in an Al3+ ion?

a. 13

b. 10

c. 16

d. 3

57. How many electrons can be held in the third PEL of an atom?

a. 2

b. 8

c. 18

d. 32

58. Which of the following wavelengths of visible light is best absorbed by chlorophyll?

a. 300 nm

b. 495 nm

c. 665 nm

d. 550 nm

59. The xylem vessels of a plant are responsible for carrying

a. water up through the plant.

b. light energy to the leaves.

c. chlorophyll to the leaves.

d. oxygen into the leaves.

60. When placed in distilled water, a human red blood cell

a. shrivels up.

b. neither shrinks nor swells.

c. takes up more salts to balance all concentrations.

d. swells to a larger size.

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