each is true of proteins except one which is the exception

ATI RN

Nutrition ATI Proctored Exam

1. 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.

2. All of the following are contraindications when giving Immunization except:

A. BCG Vaccine can be given to a child with AIDS
B. BCG Vaccine can be given to a child with Hepatitis B
C. DPT can be given to a child that had convulsion 3 days after being given the first DPT dose
D. DPT can be given to a child with active convulsion or other neurological disease

Correct answer: B

Rationale: The correct answer is B. BCG vaccine can be given to a child with Hepatitis B, as there is no contraindication for this. Choice A, C, and D all present contraindications for administering immunizations. Choice A is incorrect because giving BCG vaccines to a child with AIDS is a contraindication. Choice C is incorrect as convulsions after the first DPT dose indicate a contraindication to subsequent doses. Choice D is incorrect because active convulsions or other neurological diseases are contraindications to receiving the DPT vaccine.

3. A client is being taught how to follow a low-purine diet for gout management. Which statement indicates the client understands the teaching?

A. "I will need to limit the number of fruit servings each day."?
B. "I should avoid eating liver and other organ meats."?
C. "I can drink only white wine."?
D. "I should choose red meat instead of poultry."?

Correct answer: B

Rationale: The correct answer is B. Organ meats like liver are high in purines, which can exacerbate gout symptoms. Choosing to avoid such foods is essential in following a low-purine diet. Option A is incorrect because fruits are generally low in purines and are not usually restricted in a low-purine diet. Option C is incorrect as white wine, just like other types of alcohol, should be consumed in moderation or avoided due to its purine content. Option D is incorrect because red meat, including beef and lamb, is high in purines and should be limited in a low-purine diet.

4. Which of the following is the most important risk factor for development of Chronic Obstructive Pulmonary Disease?

A. Cigarette smoking
B. Occupational exposure
C. Air pollution
D. Genetic abnormalities

Correct answer: B

Rationale: Nursing interventions should be grounded in a deep understanding of the physiological processes involved, ensuring that care provided is both effective and efficient.

5. Which physiologic effect should the nurse expect in a client addicted to hallucinogens?

A. Dilated pupils
B. Constricted pupils
C. Bradycardia
D. Bradypnea

Correct answer: B

Rationale: Clients addicted to hallucinogens often exhibit constricted pupils due to the effects of the drug on the sympathetic nervous system. This sympathetic stimulation causes the pupils to constrict rather than dilate. Choices A, C, and D are incorrect. Dilated pupils are more commonly associated with stimulant use, while bradycardia (slow heart rate) and bradypnea (slow breathing) are not typical effects of hallucinogens.