ATI TEAS 7
Chemistry
1. What is the term for a solution with a pH value less than 7?
- A. Acidic
- B. Neutral
- C. Alkaline
- D. Basic
Correct answer: a
Rationale: Solutions with a pH less than 7 are acidic. The other choices do not accurately describe solutions with a pH less than 7.
2. Look at the following electron configuration: 1s2 2s2 2p6 3s2 3p6. To which group and period does this element belong?
- A. Group 16, Period 3
- B. Group 14, Period 3
- C. Group 18, Period 3
- D. Group 17, Period 2
Correct answer: C
Rationale: ) Group 18, Period 3. Count the total electrons (2 + 2 + 6 + 2 + 6 = 18) and observe the completely filled energy levels. This points to a noble gas in Group 18 (Neon) during Period 3.
3. Sebaceous glands, located in the dermis, secrete an oily substance called:
- A. Sweat
- B. Sebum
- C. Cerumen
- D. Mucus
Correct answer: B
Rationale: The correct answer is B: Sebum. Sebaceous glands are located in the dermis layer of the skin and are responsible for producing sebum, an oily substance that helps lubricate and waterproof the skin and hair. Sweat glands, on the other hand, are located in the dermis and subcutaneous layers and produce sweat to help regulate body temperature. Cerumen is produced by ceruminous glands in the ear canal to protect the ear, while mucus is produced by mucous glands in the respiratory system to help trap and remove particles. Therefore, sebum is the oily substance secreted by sebaceous glands in the dermis.
4. Which type of glial cell provides structural support and insulation for neurons in the central nervous system?
- A. Schwann cells
- B. Astrocytes
- C. Oligodendrocytes
- D. Microglia
Correct answer: C
Rationale: The correct answer is C: Oligodendrocytes. Oligodendrocytes are a type of glial cell found in the central nervous system that provide structural support and insulation for neurons by forming myelin sheaths around axons. Schwann cells, on the other hand, are found in the peripheral nervous system. Astrocytes play a role in nutrient transfer and maintaining the blood-brain barrier. Microglia are responsible for immune defense and clearing debris in the CNS. Therefore, oligodendrocytes are specifically responsible for providing structural support and insulation for neurons in the central nervous system.
5. Harry is a Unit Manager I the Medical Unit. He is not satisfied with the way things are going
- A. Call for a staff meeting and take this up in the agenda.
- B. Seek help from her manager.
- C. Develop a strategic action on how to deal with these concerns.
- D. Ignore the issues since these will be resolved naturally.
Correct answer: A
Rationale: Choosing option A, 'Call for a staff meeting and take this up in the agenda,' is the best course of action for Harry as a Unit Manager. By calling for a staff meeting, Harry can openly address his concerns with the team, gather input from team members, and work collaboratively to find solutions. This approach promotes transparency, communication, and teamwork, which are essential in resolving issues within a unit. Seeking help from his manager, as suggested in option B, may be necessary in some cases, but initiating a discussion with the staff first allows for a more inclusive problem-solving process. Developing a strategic action, as in option C, is important, but involving the team in this process through a staff meeting is crucial for buy-in and implementation. Ignoring the issues, as in option D, is never a productive approach as unresolved issues can escalate and impact team morale and performance. Therefore, option A is the most effective and proactive way for Harry to address hi
6. What part of speech is the underlined word in the sentence "I was disappointed by the outcome"?
- A. Verb
- B. Noun
- C. Adjective
- D. Adverb
Correct answer: C
Rationale: "Disappointed" modifies the pronoun "I," making it an adjective.
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