ATI TEAS 7
English Grammar
1. In technical writing, it's crucial to:
- A. Use informal language to connect with the audience.
- B. Emphasize your expertise with complex jargon.
- C. Explain concepts clearly and concisely for diverse readers.
- D. Prioritize creativity and artistic flair in your writing style.
Correct answer: C
Rationale: Technical writing aims to convey information accurately and understandably to various audiences, requiring clear and concise language.
2. Which type of reaction is represented by the equation A + B → AB?
- A. Synthesis
- B. Decomposition
- C. Single Replacement
- D. Double Replacement
Correct answer: a
Rationale: Synthesis reactions involve the combination of two or more substances to form a new compound.
3. Elements tend to gain or lose electrons to achieve stable electron configurations like those of noble gases. Their group number often indicates the number of electrons gained/lost and the resulting ionic charge, providing a good starting point for prediction.
- A. Ionic bonds involve electron sharing, while metallic bonds involve electron transfer
- B. Ionic bonds are weak and directional, while metallic bonds are strong and non-directional
- C. Ionic bonds exist between metals and non-metals, while metallic bonds exist only between metals
- D. Ionic bonds form discrete molecules, while metallic bonds form extended structures
Correct answer: D
Rationale: Ionic bonds involve complete electron transfer between atoms, creating strong, non-directional electrostatic attraction. Metallic bonds involve a delocalized "sea" of electrons shared across all metal atoms, resulting in a strong, extended structure.
4. Which element has the lowest electronegativity value?
- A. Oxygen
- B. Fluorine
- C. Helium
- D. Chlorine
Correct answer: C
Rationale: Electronegativity is the tendency of an atom to attract electrons towards itself in a bond. Noble gases like helium have very low electronegativity because their outer electron shell is already full and stable.
5. A pizza has a diameter of 40cm. What is its perimeter (circumference)?
- A. 62.8cm
- B. 125.5cm
- C. 125.6cm
- D. 251.2cm
Correct answer: C
Rationale: Multiply the diameter by À: perimeter = À * diameter = À * 40cm ≈ 125.6cm (Note: À ≈ 3.14)
6. The human immunodeficiency virus (HIV) targets and destroys which type of immune cell?
- A. Neutrophils
- B. Macrophages
- C. Helper T cells
- D. Memory B cells
Correct answer: A
Rationale: The correct answer is C: Helper T cells. HIV targets and destroys Helper T cells, which are a crucial component of the immune system responsible for coordinating the immune response. Neutrophils and macrophages are also important immune cells, but they are not the primary target of HIV. Memory B cells are responsible for mounting a rapid response upon re-exposure to a pathogen but are not the main target of HIV. Thus, HIV primarily affects Helper T cells, leading to the weakening of the immune system and the development of acquired immunodeficiency syndrome (AIDS).
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