Nursing Elites

1. What is the primary function of protein in the diet?

• A. supply energy.
• B. synthesize vitamins.
• C. build and repair tissue.
• D. store glycogen.

Correct answer: C

Rationale: The primary function of protein in the diet is to build and repair tissues. Proteins are essential for the growth, maintenance, and repair of body tissues like muscles, skin, and organs. While proteins can be a source of energy, their primary role is not to supply energy, making choice A incorrect. Choice B is also incorrect as proteins do not synthesize vitamins; rather, they are essential nutrients themselves. Choice D is inaccurate because glycogen is a form of stored glucose in the body, not a function of protein.

2. Sucrose consists of a combination of glucose and:

• A. maltose.
• B. fructose.
• C. galactose.
• D. lactose.

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.

3. Which gastric enzyme present in infants coagulates milk?

• A. Casein.
• B. Pepsinogen.
• C. Trypsin.
• D. Rennin.

Correct answer: D

Rationale: The correct answer is D, rennin. Rennin is the enzyme in infants responsible for coagulating milk, which aids in the digestion process. Choice A, casein, is a milk protein and not an enzyme. Choices B and C, pepsinogen and trypsin, are digestive enzymes but are not specifically involved in coagulating milk in infants.

4. Which phase of metabolism makes growth and repair possible?

• A. digestion
• B. catabolism
• C. anabolism
• D. ketosis

Correct answer: C

Rationale: Anabolism is the phase of metabolism responsible for building up and repairing tissues in the body. It involves processes that require energy to synthesize complex molecules from simpler ones. Digestion (choice A) is the process of breaking down food into simpler substances for absorption. Catabolism (choice B) involves the breakdown of complex molecules into simpler ones with the release of energy. Ketosis (choice D) is a metabolic state where the body uses fat as the primary source of energy, which is not directly related to growth and repair.

5. The process of breaking down body protein into amino acids for energy is known as:

• A. Deamination.
• B. Transamination.
• C. Transcription.
• D. Catabolism.

Correct answer: D

Rationale: The correct answer is D: Catabolism. Catabolism involves the breakdown of body proteins into amino acids to be used as energy when there is an inadequate dietary intake. Choices A and B, deamination and transamination, involve the removal and transfer of amino groups, respectively, but not the breakdown of body proteins. Choice C, transcription, is a process in genetics where DNA is used to create mRNA, not related to breaking down body proteins.

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