Question

which is the compound that donates hydrogen ions in a solution?
acid
base
buffer
none of the above
question 2 (2 points)
which condition is associated with diminished levels of partial pressure of carbon dioxide?
hypoxia
hypoxemia
hypocapnea
hypercapnea
question 3 (2 points)
which statement made by a student nurse pertains to the theory of protein deficiency as a possible cause of formation of renal calculi?
\a kidney stone is formed when crystalline constituents settle on uropontin.\
\calcium phosphate deposition in the renal papilla leads to formation of a kidney stone.\
\a randall plaque is formed when a calcium phosphate compound settles in the renal papilla.\

ephrocalcin inhibits kidney stone formation.\

Explanation:

• For Question 1: According to the Arrhenius - definition, an acid is a compound that donates hydrogen ions ($H^+$) in a solution.
• For Question 2: Hypocapnea is a condition associated with decreased partial - pressure of carbon dioxide. Hypoxia refers to low oxygen levels in tissues, hypoxemia to low oxygen levels in the blood, and hypercapnea to high carbon - dioxide levels.
• For Question 3: Protein deficiency can lead to the formation of Randall plaques. A Randall plaque is formed when a calcium phosphate compound settles in the renal papilla.

Answer:

1. A. Acid
2. C. Hypocapnea
3. C. "A Randall plaque is formed when a calcium phosphate compound settles in the renal papilla."