JAMB Biology 2021 Objective — Question 6

Question 6 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2021 Objective paper, with the correct answer and a full explanation.

6. The content of which of the following acidic? (a) mouth (b) stomach (c) Duodenum (d) stomach & duodenum

A. mouth
B. stomachCorrect
C. Duodenum
D. stomach & duodenum

Explanation

Saliva in the mouth is alkaline, but this alkalinity is neutralised in the stomach by HCl, making the stomach's content acidic. The duodenum's content is alkaline due to bile.

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