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Carbonic anhydrase catalyzes the reaction of carbon dioxide and water to form ______.

Which of the following is an example of chemical digestion?

The chemoreceptors that send sensory input to the respiratory centers are found in the following locations exceptthe ______.

An innate, nonspecific defense against the action of viruses that cells infected with viruses can produce is ___________.

An organic compound that the body needs in minute amounts is a __________.

The nutrient(s) required for the production of hemoglobin include ______.

When the right atrium contracts, the ______.

_________ are primarily used as an energy source, but unused quantities are converted into _________ and stored.

The rate and depth of breathing are affected by the following factors EXCEPT ______.

Valves are found insome ______.