Nursing Elites

1. Which bond is formed by a positively charged metal ion and negatively charged nonmetal ion?

• A. Ionic bond
• B. Covalent bond
• C. Functional group
• D. Metallic bond

Correct answer: A

Rationale: The correct answer is an ionic bond. An ionic bond is formed when a positively charged metal ion joins with a negatively charged nonmetal ion, resulting in a transfer of electrons. In contrast, a covalent bond involves sharing electrons between atoms rather than complete transfer. Functional groups are specific groups of atoms within molecules that determine the molecule's chemical properties. Metallic bonds occur between metal atoms where electrons are shared across a delocalized electron cloud.

2. Loss of smell results in a condition that limits capacity to detect the flavor of food and beverages called:

• A. Hypergeusia
• B. Dysgeusia
• C. Anosmia
• D. Phantom taste

Correct answer: C

Rationale: Anosmia is the loss of the sense of smell, which significantly impacts the ability to detect flavors in food and beverages.

3. What is the most appropriate instruction to provide to the parent of a child who does not like a food item?

• A. The child should not be encouraged to try it again.
• B. The child should be offered a reward if they eat most of the food items.
• C. The child should be offered the item at least 8 times on different occasions.
• D. The child should be encouraged to eat at least 5 bites of the food item.

Correct answer: C

Rationale: The correct answer is C. Encouraging repeated exposure to the food item can help the child develop a taste for it. Option A is incorrect as it suggests avoiding encouraging the child to try the food again, which may hinder their ability to develop a liking for it. Option B is incorrect as using rewards for eating may not promote a genuine interest in the food item. Option D is incorrect because setting a specific number of bites may create pressure and negativity around mealtime, rather than fostering a positive association with the food.

4. In order to establish and maintain successful breastfeeding, which practice should a lactating mother try to follow?

• A. Initiate breastfeeding within 24 hours of birth
• B. Breastfeed on a schedule of every 2 to 3 hours
• C. Give a pacifier to an infant between feedings
• D. Find a breastfeeding support group to troubleshoot problems

Correct answer: D

Rationale: The correct answer is D. Finding a breastfeeding support group is crucial for a lactating mother to establish and maintain successful breastfeeding. This group can offer valuable advice, tips, and encouragement, helping the mother troubleshoot any issues that may arise during breastfeeding. Choices A, B, and C are incorrect because breastfeeding is a natural process that should not be overly scheduled, and giving a pacifier between feedings can interfere with establishing proper breastfeeding techniques.

5. Each statement is true of proteins, except one. Which is the exception?

• A. Proteins are composed of building blocks called amino acids
• B. The classification of the 20 common amino acids is based on the properties of their side chains
• C. The general structure of an amino acid varies considerably
• D. Amino acids polymerize to form long chains called polypeptides

Correct answer: B

Rationale: The correct answer is B. The classification of the 20 common amino acids is not based on the properties of their side chains, but rather on the structure of their amino and carboxyl groups. These groups are consistent among all amino acids, while the side chains, also known as R groups, are what vary and give each amino acid its unique properties. Choice A is correct because proteins are indeed composed of amino acids. Choice C is incorrect because while the side chains of amino acids can vary, the general structure of an amino acid - a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a side chain - is consistent. Choice D is correct because amino acids do polymerize to form long chains called polypeptides, which can then fold into complex shapes to form proteins.

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