Which one of the following is not a constituent of saliva?
A
Bicarbonate
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B
Lysozyme
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C
Glucose
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D
Immunoglobulin
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Solution
The correct option is C Glucose Human saliva is 99.5% water, while the other 0.5% consists of electrolytes, mucus, glycoproteins, enzymes, and antibacterial compounds such as secretory IgA and lysozyme.