Nokea
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.
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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.
What dietary recommendation is essential for a child with phenylketonuria (PKU)?
- A. High-protein diet
- B. Low-fat diet
- C. Low-phenylalanine diet
- D. High-fiber diet
Correct Answer: C
Rationale: The correct answer is C: 'Low-phenylalanine diet.' Children with phenylketonuria (PKU) need to follow a low-phenylalanine diet to manage the condition. Phenylalanine is an amino acid found in protein-containing foods, and individuals with PKU have difficulty metabolizing it, leading to neurological damage and other complications. Therefore, restricting phenylalanine intake is crucial. Choice A, 'High-protein diet,' is incorrect because high protein intake would increase phenylalanine levels, worsening the condition. Choice B, 'Low-fat diet,' and Choice D, 'High-fiber diet,' are not the primary focus for PKU patients. The key dietary intervention for PKU is controlling phenylalanine intake, which is best achieved through a low-phenylalanine diet.
What is an important aspect of care for a child with congenital adrenal hyperplasia?
- A. Monitoring electrolyte levels
- B. Restricting physical activity
- C. Administering high doses of vitamin A
- D. Providing a high-protein diet
Correct Answer: A
Rationale: The correct answer is A: Monitoring electrolyte levels. In the management of congenital adrenal hyperplasia, it is crucial to monitor electrolyte levels to prevent imbalances and related complications. Restricting physical activity (choice B) is not a typical aspect of care for this condition. Administering high doses of vitamin A (choice C) is not a standard treatment for congenital adrenal hyperplasia and can be harmful in excess. Providing a high-protein diet (choice D) may be beneficial for some conditions but is not a specific requirement for managing congenital adrenal hyperplasia.
What is a common early sign of RSV (respiratory syncytial virus) in infants?
- A. High fever
- B. Nasal congestion
- C. Rash
- D. Jaundice
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Why is randomization important in a scientific experiment?
- A. To minimize the impact of confounding variables.
- B. To eliminate bias in the assignment of subjects to groups.
- C. To contribute to the accuracy and validity of the experiment's results.
- D. To prevent systematic differences between groups.
Correct Answer: B
Rationale: Randomization is crucial in a scientific experiment to eliminate bias in the assignment of subjects to groups. By randomly assigning subjects, it helps ensure that any differences observed in the outcomes are due to the experimental treatment and not to preexisting differences between groups. Choice A is incorrect because randomization does not guarantee representativeness but rather minimizes the impact of confounding variables. Choice C is not entirely accurate; while randomization can contribute to accuracy and validity, its primary purpose is to reduce bias. Choice D is incorrect as the goal of randomization is not to balance the number of subjects but to prevent systematic differences between groups.