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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
15 views

Most nutrients are absorbed in the _________.

  1. a. mouth
  2. b. stomach
  3. c. small intestine
  4. d. large intestine

Summary Introduction

Introduction: Small intestine is the major organ in human body that is involved in the absorption of major nutrients. The digested food from the stomach passes through the small intestine, the cells absorbs the nutrients and transports them to blood vessels.

Explanation

Reason for correct answer:

The digested monomer nutrients are transported and get absorbed to the wall of the small intestine and later on the nutrients are carried out through the blood streams. Small intestine has three regions: duodenum (complete digestion of food), jejunum (major site for nutrient absorption), and ileum (full absorption of nutrients that were missed in the jejunum).

Option c. is given as “small intestine”. Digested nutrients, such as simple sugars (glucose, fructose, and galactose), amino acids are absorbed in the jejunum region and vitamin B12, bile acids and the rest nutrients are absorbed in the ileum region of small intestine.

Hence, the correct answer is option c.

Reasons for incorrect answer:

Option a. is given as “mouth”. This is incorrect because the mouth is the part where the digestion begins...

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