Which of the following statements regarding the bicarbonate-carbonic acid buffer system is correct?
A. The lungs regulate the carbonic acid concentration of the blood by regulating alveolar PCO2.
B. The kidneys regulate the carbonic acid concentration of the blood by forming carbonic acid within the tubular epithelial cells.
C. The kidneys regulate the bicarbonate concentration of the blood by secreting bicarbonate ions into the tubular filtrate.
D. A fall in the bicarbonate concentration of the blood resulting from buffering (neutralizing) acid ketone bodies in a person with diabetic ketoacidosis is associated with a corresponding rise in blood PCO2 and carbonic acid.
Question 2
Which of the following statements regarding breast carcinoma is INCORRECT?
A. More common in women than in men
B. Often can be detected by mammography before a palpable tumor can be detected by physical examination
C. Early diagnosis and treatment improves survival
D. Has a high mortality rate and most patients eventually die of widespread metastases
The relationship between pH, pKa, and the dissociation of an acid
The respiratory system
The Global Climate System Is Very Complex
Action of the DNA uracil repair system
The Excretory System Water and waste products from cells
The Oceanic Ridge System