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Which of the following chemicals is a mineral that provides mechanical
strength and is found in teeth and bones?
A. Sodium chloride
B. Calcium carbonate
C. Calcium hydroxyapatite
D. Sodiumaluminosilicate - correct answer -B. Calcium carbonate
The table shows the solubility of oxygen (mg/L) at different water
temperatures. Which of the following statements best explains the
relationship between temperature and solubility of oxygen in water?
Temperature (C) Solubility of Oxygen (mg/L)
0 14.6
10 11.3
20 9.1
,30 7.9
A. A direct correlation exists between water temperature and oxygen
solubility
B. The solubility of oxygen in water increases with the water
temperature
C. An inverse correlation exists between water temperature and oxygen
solubility
D. Water temperature has no effect on oxygen solubility - correct
answer -C. An inverse correlation exists between water temperature
and oxygen solubility
Which of the following cell types confers waterproofing on the outer
layers of the skin?
A. Melanocytes
B. Keratinocytes
C. Merkel Cells
D. Langerhans cells - correct answer -B. Keratinocytes
, Which of the following results from the immune system attacking an
individual's own healthy tissue?
A. Lupus
B. AIDS
C. Asthma
D. Atherosclerosis - correct answer -A. Lupus
Which of the following will occur if a person who has blood type A
received type B blood?
A. B antigens on the outer surface of the receptor's blood cells will
cause their red blood cells to clump
B. Antibodies against blood type B will be produced in the recipient's
blood plasma
C. Existing antibodies against blood type A in the recipient's blood
plasma will cause red blood cells to clump
D. People who have blood type A can receive blood type B with no
reaction - correct answer -B. Antibodies against blood type B will be
produced in the recipient's blood plasma