The chemical formula of the oxygen we require is O2. It is
A) a compound.
B) an isotope.
C) an element.
D) a molecule.
E) both an element and a molecule.
E
Bloom's Taxonomy: Knowledge
Section: Chemical Bonds
Learning Outcome: 2.3, 2.6
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Which of the following best describes the process of ventilation?
A) the movement of oxygen gas through the blood of the circulatory system B) the movement of carbon dioxide gas through the blood of the circulatory system C) the movement of the respiratory medium past the respiratory surface D) the diffusion of gases into and out of the circulatory system E) the diffusion of gases into and out of tissues where cellular respiration occurs
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Indicate whether the statement is true or false.
Urine is moved through the ureter to the bladder by muscular contractions known as ____.
Fill in the blank(s) with the appropriate word(s).