Nokea
Why is peer review important in scientific research?
- A. To expedite publication of results.
- B. To facilitate the replication of studies.
- C. To verify the accuracy and validity of research findings.
- D. To enhance the credibility of the research.
Correct Answer: C
Rationale: Peer review is crucial in scientific research to verify the accuracy and validity of research findings. By subjecting research papers to evaluation by experts in the field, peer review ensures that the study's methods, results, and conclusions are robust and reliable. This process helps to maintain high standards of quality in scientific publications, providing credibility to the research. Choices A and D are incorrect because the primary purpose of peer review is not to expedite publication or solely enhance credibility; its core function is to validate the research's accuracy and validity. Choice B, while beneficial, is not the primary reason for peer review; replication is a byproduct of the rigorous evaluation of research methods and findings.
You may also like to solve these questions
By chemical analysis, what nutrient is present in the highest amounts in most foods?
- A. fats
- B. water
- C. proteins
- D. carbohydrates
Correct Answer: B
Rationale: The correct answer is B. Water is the most abundant nutrient in many foods. Water content varies across different foods, but in general, it is present in the highest amounts. Fats (Choice A) are essential but are not found in higher amounts compared to water. Proteins (Choice C) and carbohydrates (Choice D) are also important nutrients, but they are typically found in lower quantities in most foods compared to water.
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.
What is a common complication of untreated type 1 diabetes in children?
- A. Diabetic ketoacidosis
- B. High blood pressure
- C. Asthma
- D. Frequent infections
Correct Answer: A
Rationale: Diabetic ketoacidosis is a serious complication of untreated type 1 diabetes in children. It is characterized by high blood sugar levels, ketones in the urine, and acidosis. Prompt medical attention is required to manage this condition. High blood pressure (Choice B) can be a complication of diabetes but is not as directly linked to untreated type 1 diabetes as diabetic ketoacidosis. Asthma (Choice C) and frequent infections (Choice D) are not typically associated with untreated type 1 diabetes in children.
What should be assessed first in a child with suspected head trauma?
- A. Response to verbal stimuli
- B. Pupillary reaction
- C. Skin color
- D. Heart rate
Correct Answer: A
Rationale: The correct answer is to assess the response to verbal stimuli first in a child with suspected head trauma. This assessment helps in determining the child's level of consciousness and neurological status. Assessing the response to verbal stimuli allows healthcare providers to quickly evaluate if the child is alert, oriented, and able to communicate effectively. This initial assessment is crucial in identifying any immediate concerns related to the child's neurological function. Choices B, C, and D are not the primary assessments in cases of suspected head trauma. While pupillary reaction, skin color, and heart rate are important assessments in trauma situations, assessing the response to verbal stimuli takes precedence in evaluating the neurological status of a child with head trauma.
How many minerals are known to be essential for human nutrition?
- A. 8
- B. 12
- C. 16
- D. 20
Correct Answer: C
Rationale: There are 16 essential minerals required for human nutrition. These minerals include calcium, potassium, iron, and others. Choice A (8) is incorrect as it underestimates the number of essential minerals. Choice B (12) is also incorrect as it does not encompass the full count of essential minerals. Choice D (20) is incorrect as it overestimates the number of essential minerals.