ATI TEAS 7
Chemistry
1. What is the functional group present in ethers?
- A. Hydroxyl
- B. Carbonyl
- C. Ether
- D. Amine
Correct answer: C
Rationale: Ethers have the functional group -O-, representing an oxygen atom bonded to two alkyl or aryl groups. The other choices are associated with different functional groups.
2. A rectangular bandage measures 5cm by 8cm. What is the area covered by the bandage?
- A. 10cm
- B. 13cm
- C. 40cm^2
- D. 64cm^2
Correct answer: C
Rationale: 40cm^2: Multiply the length (5cm) by the width (8cm).
3. Which element is used in insulin and promotes glucose uptake into cells for energy production?
- A. Zinc
- B. Chromium
- C. Manganese
- D. Iron
Correct answer: B
Rationale: Chromium aids in insulin's function, enhancing glucose uptake by cells and regulating blood sugar levels.
4. Functional nursing has some advantages, which one is an EXCEPTION?
- A. Psychological and sociological needs are emphasized.
- B. Great control of work activities.
- C. Most economical way of delivering nursing services.
- D. Workers feel secure in dependent role
Correct answer: B
Rationale: Functional nursing is a task-oriented approach where each nurse is assigned specific duties, leading to efficient task completion but often resulting in a lack of holistic care. While functional nursing may provide great control over work activities and can be cost-effective due to specialization, it does not emphasize psychological and sociological needs, which is a significant disadvantage. Additionally, the dependent role that workers feel in functional nursing can lead to disempowerment and hinder professional growth and autonomy. Therefore, option A, 'Psychological and sociological needs are emphasized,' is the exception among the advantages of functional nursing.
5. 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
6. During which phase of the cardiac cycle do the atria contract, pushing blood into the ventricles?
- A. Atrial diastole
- B. Ventricular systole
- C. Atrial systole
- D. Ventricular diastole
Correct answer: C
Rationale: The correct answer is C: Atrial systole. During the cardiac cycle, the atria contract during atrial systole, pushing blood into the ventricles. This phase occurs after atrial diastole when the atria fill with blood. Ventricular diastole (option D) is when the ventricles relax and fill with blood, preparing for ventricular systole (option B), which is when the ventricles contract to pump blood out of the heart. Atrial systole is crucial for ensuring efficient filling of the ventricles before they contract, making it a key phase in the cardiac cycle.
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