Question

1. water is absorbed mostly in the:

stomach
small intestine
large intestine
jejunum
colon

1. __________ is produced by bacteria in the colon but it is not absorbed.

vitamin k
vitamin b12
vitamin a
vitamin c
vitamin d

Explanation:

1. The large intestine is the main site for water absorption in the digestive - system. While some water is absorbed in the small intestine (including the jejunum which is part of the small intestine), the majority occurs in the large intestine. The colon is part of the large intestine.
2. Bacteria in the colon produce vitamin K, but it is not absorbed in the colon. Vitamins B12, A, C, and D are not produced by bacteria in the colon in significant amounts relevant to this context.

Answer:

1. Large intestine
2. Vitamin K