Nokea
In the scientific method, a tentative solution to a problem is called a what?
- A. theory
- B. prediction
- C. hypothesis
- D. correlation
Correct Answer: C
Rationale: In the scientific method, a hypothesis is a tentative solution or educated guess that is tested through research. A theory (choice A) is a well-substantiated explanation based on evidence and extensive testing. A prediction (choice B) is a statement about what will happen in the future based on existing knowledge. Correlation (choice D) refers to a mutual relationship between two or more things, indicating how they may change together but not providing a solution to a problem.
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What is the primary reason influencing most people's food choices?
- A. cost
- B. taste
- C. convenience
- D. nutritional value
Correct Answer: B
Rationale: The primary reason most people choose the foods they eat is taste. While cost, convenience, and nutritional value also play a role in food choices, taste often takes precedence as people are more likely to select foods that they find appealing in flavor. Therefore, options A, C, and D are incorrect as taste is the chief factor influencing food choices.
What is the recommended first step in the management of a child with a suspected head injury?
- A. Administer pain medication
- B. Assess the child's level of consciousness
- C. Perform a CT scan
- D. Monitor for seizures
Correct Answer: B
Rationale: The correct first step in managing a child with a suspected head injury is to assess the child's level of consciousness. This assessment is crucial as it helps determine the severity of the injury and guides further management. Administering pain medication (Choice A) should not be done before assessing the level of consciousness. Performing a CT scan (Choice C) may be necessary but is not the initial step. Monitoring for seizures (Choice D) is important but comes after assessing the child's level of consciousness.
In what position does the Pavlik harness hold a child's femurs for developmental hip dysplasia?
- A. Abduction
- B. Adduction
- C. Flexion
- D. Extension
Correct Answer: A
Rationale: The Pavlik harness is designed to position a child's femurs in abduction for developmental hip dysplasia. Abduction helps align the hip joint correctly and promotes proper development in cases of hip dysplasia. Adduction (choice B) brings the legs closer to the midline, which is not the desired position in this condition. Flexion (choice C) refers to bending at a joint, while extension (choice D) is the opposite of flexion. However, in the case of developmental hip dysplasia, abduction is crucial for the Pavlik harness to work effectively.
What dietary recommendation should be made to a child with iron-deficiency anemia?
- A. Increase intake of dairy products
- B. Include high-iron foods like spinach and meat
- C. Decrease protein intake
- D. Avoid all grains
Correct Answer: B
Rationale: The correct recommendation for a child with iron-deficiency anemia is to include high-iron foods like spinach, red meat, and beans in their diet. These foods are rich sources of iron and can help address the deficiency. Choice A is incorrect as dairy products do not provide significant iron content. Choice C is incorrect because protein intake does not need to be decreased; in fact, lean meats are good sources of iron. Choice D is also incorrect as whole grains can be a part of a healthy diet and do not need to be avoided in this case.
What is a common symptom of congenital heart disease in infants?
- A. Excessive weight gain
- B. Difficulty breathing
- C. High blood pressure
- D. Increased appetite
Correct Answer: B
Rationale: Difficulty breathing is a common symptom of congenital heart disease in infants. Infants with congenital heart disease may experience difficulty breathing due to impaired cardiac function, which affects the heart's ability to pump blood effectively. This symptom is often due to issues like heart failure or fluid accumulation in the lungs. Excessive weight gain (Choice A) is not typically associated with congenital heart disease in infants. High blood pressure (Choice C) is less common in infants with congenital heart disease compared to adults. Increased appetite (Choice D) is not a typical symptom of congenital heart disease in infants.