AP BIOLOGY

ANIMAL PHYSIOLOGY

DIGESTION IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Saliva is 98% of water
A
True
B
False
Explanation: 

Detailed explanation-1: -Saliva is Mostly Water Saliva is composed of 98% straight water; the remaining 2% is composed of other substances including mucus, proteins, minerals, electrolytes, antibacterial compounds and enzymes.

Detailed explanation-2: -Saliva is 99% water and 1% protein and salts. The normal daily production of saliva varies between 0.5 and 1.5 liters. The whole unstimulated saliva flow rate is approximately 0.3-0.4 ml / min.

Detailed explanation-3: -If you’re wondering what saliva is made of, it’s 99% water. This is no surprise considering the body is made of 60% water. The remaining 1% of saliva contains digestive enzymes, uric acid, electrolytes, mucus-forming proteins, and cholesterol.

Detailed explanation-4: -Human saliva is composed of 99.5 percent water. The other half percent is a combination of electrolytes, mucus, white blood cells, enzymes and other antimicrobial agents naturally produced by the body. There are even small amounts of hydrogen peroxide, an antibacterial compound, found in saliva.

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