Carbonic acid reversibly dissociates to form what two products, without the need of an enzyme?

A) water and carbon dioxide
B) water and hydrogen ion
C) water and bicarbonate
D) carbon dioxide and bicarbonate
E) bicarbonate and hydrogen ion


Ans: bicarbonate and hydrogen ion

Anatomy & Physiology

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Which gas, also carried by a hemoglobin, may help regulate blood pressure?

A. Nitric oxide B. Nitrogen C. Carbon dioxide D. Carbon monoxide

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The center portion of a long bone is called the .

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Structure D is the


A) sella turcica.
B) styloid process.
C) mastoid process.
D) external auditory meatus.
E) coronoid process

Anatomy & Physiology

The major regulator of respiration is the plasma concentration of ________.

A. carbon dioxide B. water vapor C. nitrogen D. oxygen E. chloride

Anatomy & Physiology