Blood physiology: practice question

A Physiology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Physiology · Blood physiology

Sample item

What does the Bohr effect describe?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

A. Reduced haemoglobin oxygen affinity at high carbon dioxide and low pH

High carbon dioxide and hydrogen ion concentrations shift haemoglobin affinity rightward, enhancing oxygen unloading in metabolically active tissues.

Option by option

  • A. Reduced haemoglobin oxygen affinity at high carbon dioxide and low pH (correct)

    Correct: acidosis promotes oxygen delivery to tissue.

  • B. Renal sodium retention after shock

    Sodium retention involves RAAS.

  • C. Alveolar surfactant production

    Surfactant is produced by type II cells.

  • D. Increased platelet adhesion after injury

    Platelet adhesion is primary haemostasis.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More Physiology questions

Questions about this Physiology question

What is the answer to this Physiology question?

The best answer is A, Reduced haemoglobin oxygen affinity at high carbon dioxide and low pH. High carbon dioxide and hydrogen ion concentrations shift haemoglobin affinity rightward, enhancing oxygen unloading in metabolically active tissues.

Why is "Renal sodium retention after shock" not the answer?

Sodium retention involves RAAS.

Why is "Alveolar surfactant production" not the answer?

Surfactant is produced by type II cells.

Why is "Increased platelet adhesion after injury" not the answer?

Platelet adhesion is primary haemostasis.

What concept does this question test?

It tests Blood physiology in Physiology. The correct option holds because: Correct: acidosis promotes oxygen delivery to tissue.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Blood physiology?

For each system, sketch the key graph (pressure–volume loop, oxygen dissociation curve, nephron handling) and explain it aloud. Then use the flashcards and the other Physiology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.