MDCAT Chemistry MCQ #2238

When comparing the physiological pH of human blood and gastric juice, the primary difference is that:

MDCAT Chemistry MCQ #2238

  1. Question 1

    Q1. When comparing the physiological pH of human blood and gastric juice, the primary difference is that:

    • A) Blood is slightly basic while gastric juice is highly acidic
    • B) Blood is highly acidic while gastric juice is neutral
    • C) Both fluids have the same pH of 7.4
    • D) Blood pH is maintained by HCl while gastric juice uses buffers

    Answer: Blood is slightly basic while gastric juice is highly acidic

    Explanation: Human blood is slightly basic (pH 7.35-7.4) and highly buffered, whereas gastric juice is highly acidic (pH 1-2) for digestion.