Water, pH & Buffering System

Most of the water in the body is present as

• intracellular fluid

• interstitial fluid

• extracellular fluid

• plasma

After a sport event, an athlete might choose a sport drink instead of water because water is

• hypotonic

• isotonic

• hypertonic

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The body loses water mainly through

• respiration

• excretion

• sweating

• urination

The breakdown of which macromolecule produces the highest amount of metabolic water?

• lipid

• protein

• carbohydrate

• nucleic acid

This red blood cell is placed in what type of solution?

• isotonic

• hypotonic

• hypertonic

• herbal tonic