the first step in the scientific method is to

ATI RN

ATI Nutrition Practice A

1. What is the first step in the scientific method?

A. Conduct an experiment
B. Make an observation and ask a question
C. Formulate a hypothesis
D. Reach a consensus

Correct answer: B

Rationale: The first step in the scientific method is to make an observation and ask a question. This is because the scientific method is a systematic process of investigation that begins with observing a phenomenon or asking a question about it. This is followed by formulating a hypothesis (Choice C), designing and conducting an experiment to test the hypothesis (Choice A), and analyzing the results to reach a consensus or conclusion (Choice D). Therefore, choices A, C, and D are incorrect as they represent steps that occur after the initial observation and question.

2. During the first 24 hours after the thermal injury, you should assess Sergio for:

A. hypokalemia and hypernatremia
B. hypokalemia and hyponatremia
C. hyperkalemia and hyponatremia
D. hyperkalemia and hypernatremia

Correct answer: D

Rationale: During the initial phase after a thermal injury, the major concern is the release of potassium due to cell damage, leading to hyperkalemia. Hypernatremia is not typically a primary concern in the immediate post-injury phase. Hyponatremia is less likely to occur initially after a burn injury. Therefore, the correct assessment for Sergio during the first 24 hours after the thermal injury would be hyperkalemia and hypernatremia.

3. Generally, lifestyle-related diseases share common risk factors. Which of the following is NOT one of them?

A. Physical activity
B. Smoking
C. Genetics
D. Nutrition

Correct answer: C

Rationale: Common risk factors for lifestyle-related diseases typically include aspects of one's lifestyle that can be modified or controlled, such as physical activity, smoking habits, and nutrition. These factors can be changed to prevent or manage lifestyle-related diseases. Genetics, on the other hand, is not a modifiable risk factor, meaning it cannot be changed or controlled. Therefore, it is not considered a common risk factor for lifestyle-related diseases. Understanding the modifiable risk factors for these diseases allows for better prevention and management strategies, and helps reduce the risk of complications.

4. To prevent baby bottle tooth decay, what should the nurse instruct?

A. Water
B. Milk
C. Iron-fortified formula
D. Unsweetened fruit juice

Correct answer: A

Rationale: The correct answer is A: Water. Water is the best choice to prevent baby bottle tooth decay as it does not cause tooth decay and is a good option for bedtime bottles. Milk (choice B) and iron-fortified formula (choice C) contain sugars that can contribute to tooth decay. Unsweetened fruit juice (choice D) also contains natural sugars that can be harmful to the baby's teeth.

5. A nurse is teaching a client about preparing low-fat meals. The nurse should include that which of the following oils contains saturated fat?

A. Corn
B. Olive
C. Canola
D. Coconut

Correct answer: D

Rationale: Coconut oil contains a high amount of saturated fat, which can increase LDL cholesterol levels and the risk of heart disease. Olive, corn, and canola oils are primarily unsaturated fats, which are considered heart-healthy fats. Olive oil, in particular, is rich in monounsaturated fats, while corn and canola oils are good sources of polyunsaturated fats. Therefore, the correct answer is Coconut because it contains saturated fat, unlike the other options.