ATI TEAS 7
Scientific Reasoning
1. A new medication claims to reduce allergy symptoms by 90%. A study is conducted where 100 participants with allergies take the medication, and 90 report symptom reduction. Should this be enough evidence to recommend the medication for everyone?
- A. Yes, the study shows clear effectiveness.
- B. No, the sample size is too small.
- C. No, a control group without the medication is needed.
- D. No, long-term effects haven't been studied.
Correct answer: C
Rationale: : Comparing the medication group to a group receiving a placebo (inactive substance) would help isolate the medication's true effect and avoid attributing symptom reduction to other factors.
2. Which of the following is evidence that the controlling process is effective?
- A. The things that were planned are done
- B. Physicians do not complain.
- C. Employees are contended
- D. There is an increase in customer satisfaction rate.
Correct answer: A
Rationale: The correct answer is A: 'The things that were planned are done.' This is evidence that the controlling process is effective because it indicates that the organization is able to execute its plans successfully. When planned tasks and activities are completed as intended, it shows that the controlling function is ensuring that operations are on track and that deviations are being corrected. The completion of planned tasks also demonstrates that resources are being effectively utilized and that performance is being monitored and controlled. The other options do not directly relate to the effectiveness of the controlling process. Physicians not complaining, employees being contented, and an increase in customer satisfaction rate could be influenced by various factors and may not necessarily be solely attributed to the effectiveness of the controlling process.
3. Which property of a substance remains constant regardless of changes in its shape or size?
- A. Mass
- B. Weight
- C. Volume
- D. Density
Correct answer: a
Rationale: Mass is the measure of the amount of matter in an object and remains constant regardless of changes in its shape or size.
4. What is the stoichiometric coefficient of nitrogen (N2) in the balanced equation for the Haber process: N2 + 3H2 → 2NH3?
- A. 1
- B. 2
- C. 3
- D. 4
Correct answer: a
Rationale: The coefficient of N2 is 1 in the balanced equation
5. Which of the following is NOT a major division of the nervous system?
- A. Peripheral nervous system
- B. Central nervous system
- C. Somatic nervous system
- D. Autonomic nervous system
Correct answer: C
Rationale: The somatic nervous system is actually a component of the peripheral nervous system, responsible for voluntary control of skeletal muscles and sensory information. The major divisions of the nervous system are the central nervous system (which includes the brain and spinal cord) and the peripheral nervous system (which includes all nerves outside the central nervous system). The autonomic nervous system, on the other hand, is a division of the peripheral nervous system responsible for involuntary functions like heart rate and digestion. Therefore, the correct answer is C, the somatic nervous system, as it is not a major division of the nervous system.
6. The phrase "green alternative" suggests that bioremediation is...
- A. The most economical option for plastic cleanup.
- B. Faster and more efficient than traditional methods.
- C. Environmentally friendly and less harmful than other solutions.
- D. More aesthetically pleasing than existing approaches.
Correct answer: C
Rationale: The passage contrasts bioremediation with "traditional methods," explicitly linking it to being environmentally friendly.
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