Post-UTME Biology 2012 Objective — Question 5
Question 5 of 19 from the Post-UTME Screening (Post-UTME) Biology 2012 Objective paper, with the correct answer and a full explanation.
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Which of the following substances from mother's blood diffuse through the placenta into the blood vessels of the foetus?
- A. Glucose and oxygenCorrect
- B. Urea and Carbon (IV) oxide
- C. Digested food and Carbon (IV) oxide
- D. Carbon (IV) oxide and oxygen
Explanation
Glucose and oxygen diffuse from mother to foetus across the placenta; urea and CO2 diffuse the other way (foetus to mother).
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