Which of the following is not a component of saliva?
a. amylase
b. mucus
c. pepsin
d. lysozyme
e. water
C
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Which body system of a pregnant woman undergoes the most dramatic physiological changes during pregnancy?
A) respiratory system B) urinary system C) digestive system D) cardiovascular system
Among the three categories of lymphocytes, it is the ________ killer cells that attack abnormal and infected tissue cells.
Fill in the blank(s) with the appropriate word(s).
Match the following concerning concentration differences across the plasma membrane.A. Concentration of K+B. Concentration of Na+ and Cl?C. Negatively charged proteinsD. Sodium-potassium pumpE. Plasma membrane is more permeable to this ion because of leak ion channelsK+
Fill in the blank(s) with the appropriate word(s).
What is the difference in thick skin and thin skin?
A. Thick skin has hair. B. Thick skin is found all over the body, while thin skin is found on lips, palms of hands, and soles of feet. C. Thin skin is thinner than thick skin. D. Thin skin does not have the stratum lucidum layer while thick skin does.