In humans, Escherichia coli is involved in the formation of?
Correct answer: D. Vitamin K
- A. Calcium
- B. Vitamin D
- C. Vitamin A
- D. Vitamin K
Explanation
E. coli benefits its host in several ways. It produces vitamin K and vitamin B12, both of which are required by mammalian hosts. They live upon the undigested food passing through the caecum and help in better absorption of food. The deficiencies of these vitamins cause many diseases like beriberi or pernicious anemia. Therefore, option D is correct.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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