feces are composed mainly of bacteria mucosal cells mucus and
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Nutrition For PN Nursing ATI

1. Feces are composed mainly of bacteria, mucosal cells, mucus, and what else?

Correct answer: C

Rationale: The correct answer is 'C: fiber.' Feces are primarily made up of indigestible material, such as fiber. Bile (choice A) is produced by the liver to aid in digestion but is not a major component of feces. Enzymes (choice B) are involved in digestion but are not a significant component of feces. Chyme (choice D) is the semi-fluid mass of partially digested food that moves from the stomach to the small intestine and is not a major component of feces.

2. Which chain length of fatty acids is most water-soluble and easily absorbed into the bloodstream?

Correct answer: D

Rationale: Short-chain fatty acids are the most water-soluble and are more easily absorbed into the bloodstream. Very long, long, and medium-chain fatty acids are less water-soluble and are absorbed at a slower rate compared to short-chain fatty acids. Therefore, the correct answer is D.

3. Which of the following is an example of a disaccharide?

Correct answer: D

Rationale: The correct answer is D, Maltose. A disaccharide is formed when two monosaccharides are joined together. Glucose, fructose, and galactose are all monosaccharides, not disaccharides. Therefore, they are not examples of disaccharides.

4. What substance acts as an emulsifier and helps absorb digested fat?

Correct answer: A

Rationale: The correct answer is A: bile. Bile acts as an emulsifier, breaking down fats into smaller droplets to aid in digestion and absorption. Trypsin is a digestive enzyme that acts on proteins, not fats. Lipase is an enzyme that breaks down fats, but it doesn't act as an emulsifier. Cholecystokinin (CCK) is a hormone that stimulates the release of digestive enzymes, including lipase, but it is not directly involved in emulsification.

5. Exchange Lists for Meal Planning group foods that are equivalent in their:

Correct answer: D

Rationale: The Exchange Lists for Meal Planning categorize foods based on their macronutrient content, such as carbohydrate, protein, and fat. These lists help individuals make food choices while ensuring similar amounts of macronutrients are consumed. Therefore, the correct answer is D. Choices A, B, and C are incorrect because Exchange Lists focus on macronutrient content, not weight, serving size, or micronutrient content.

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