WAEC Biology 2011 Theory — Question 3

Question 3 of 27 from the West African Examinations Council (WAEC) Biology 2011 Theory paper, with the correct answer and a full explanation.

1(b) How is bitter taste detected in humans?

Model answer

The substance first dissolves in the saliva. As the taste buds that detect bitter taste are located at the back of the tongue, the sensory cells at the back of the tongue are stimulated and the impulse is passed to the brain for interpretation.

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