Nutrition ATI Proctored Exam

Correct Answer: A

Rationale: The first statement is correct as bacterial plaque can indeed metabolize sucrose, lactose, and fructose. However, the second statement is inaccurate. Fructose, despite being found naturally in honey and known also as levulose, is not less cariogenic than either sucrose or lactose. This means that its consumption does not result in fewer cavities or tooth decay. Therefore, the correct answer is that bacterial plaque can metabolize these sugars, but fructose is not less cariogenic. Choices B, C, and D are incorrect because they either wrongly assert that bacterial plaque cannot metabolize these sugars or wrongly claim that fructose is less cariogenic.

Correct Answer: D

Rationale: In a patient with liver cirrhosis, weight gain due to fluid retention can mask Protein-Energy Malnutrition (PEM) symptoms. This can lead to an increase in weight, making it challenging to identify weight loss or muscle wasting associated with PEM. Therefore, option D is correct. Options A, B, and C are incorrect because fluid retention and weight gain related to liver cirrhosis do not necessarily hide the symptoms of liver failure, gallbladder disease, or heart failure.

Correct Answer: A

Rationale: The correct answer is A, Salivary amylase. Salivary amylase is an enzyme produced by the parotid gland that initiates starch digestion in the mouth. It helps break down starch into maltose, a simpler sugar. Choices B, C, and D are incorrect because sucrase, maltase, and lactase are enzymes involved in the digestion of disaccharides like sucrose, maltose, and lactose, respectively, in the small intestine, not in the saliva.

Correct Answer: B

Rationale: The correct answer is B, fructose. Sucrose is a disaccharide composed of one molecule of glucose and one molecule of fructose. Maltose (choice A) is composed of two glucose molecules, galactose (choice C) is a monosaccharide, and lactose (choice D) is composed of one molecule of glucose and one molecule of galactose. Therefore, fructose is the correct choice for the second component of sucrose.

Correct Answer: C

Rationale: The correct answer is vitamin E. Vitamin E is the major antioxidant found in cell membranes, where it plays a crucial role in protecting them from oxidative damage. Although B12, beta-carotene, and vitamin A are important nutrients with specific functions in the body, they are not the primary antioxidants found in cell membranes. Vitamin E specifically localizes in cell membranes to neutralize free radicals and prevent lipid peroxidation, making it an essential antioxidant for cellular health.