ATI TEAS 7
Biology
1. Endotoxins are toxic substances released by:
- A. Viruses
- B. Bacteria (gram-positive)
- C. Bacteria (gram-negative)
- D. Parasites
Correct answer: C
Rationale: Rationale: Endotoxins are toxic substances that are part of the outer membrane of the cell wall of gram-negative bacteria. These toxins are released when the bacteria are destroyed or during bacterial growth. Endotoxins can cause a variety of harmful effects in the host, including fever, inflammation, and septic shock. Viruses do not produce endotoxins, and gram-positive bacteria produce exotoxins rather than endotoxins. Parasites are not typically associated with the production of endotoxins.
2. What type of sentence is the following: "Wow, what a beautiful sunset!"
- A. Interrogative sentence
- B. Declarative sentence
- C. Exclamatory sentence
- D. Imperative sentence
Correct answer: C
Rationale: The sentence expresses an emotion ("Wow") and makes an exclamation, making it an exclamatory sentence.
3. The term "barn" is a unit commonly used in nuclear physics to quantify:
- A. Energy (Electron volts are the standard unit for energy in nuclear physics)
- B. Radioactivity
- C. Nuclear cross-section
- D. Half-life
Correct answer: C
Rationale: The term 'barn' is a unit of measurement used in nuclear physics to quantify nuclear cross-section. Nuclear cross-section refers to the measure of the probability of a specific interaction occurring between particles during a nuclear reaction. The term 'barn' was coined based on its relation to the physical size of a nucleus, as it is a small unit of area used to describe the likelihood of a particle interacting with a nucleus. It is not used to quantify energy, radioactivity, or half-life, making options A, B, and D incorrect in this context.
4. Which preposition best completes the sentence: "She borrowed money _____ her friend."
- A. of
- B. from
- C. on
- D. for
Correct answer: B
Rationale: "From" indicates the source of the borrowed money.
5. The pH scale is used to indicate the concentration of:
- A. Oxygen
- B. Hydrogen ions
- C. Salts
- D. Sugar molecules
Correct answer: A
Rationale: The pH scale measures the concentration of hydrogen ions in a solution, indicating acidity or basicity.
6. She plans of assigning competent people to fill the roles designed in the hierarchy. Which
- A. Staffing
- B. Scheduling
- C. Recruitment
- D. Induction
Correct answer: B
Rationale: The correct answer is B: Scheduling. Scheduling involves assigning people to specific tasks or roles within an organization based on the hierarchy and operational needs. In this scenario, the focus is on assigning competent individuals to fill the roles outlined in the hierarchy, which aligns with the concept of scheduling. Staffing refers to the overall process of acquiring, deploying, and retaining a workforce; recruitment specifically pertains to attracting and selecting candidates for job roles; and induction involves the orientation and integration of new employees into the organization. Therefore, the most relevant term in this context is scheduling.
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