ATI TEAS 7
Chemistry
1. Balance the following redox reaction in acidic solution: I⻠(aq) + Cr₂O₇²⻠(aq) -> I₂ (aq) + Cr³⺠(aq). Identify the oxidizing agent and reducing agent.
- A. I⻠is oxidized, Cr₂O₇²⻠is reduced
- B. I⻠is reduced, Cr₂O₇²⻠is oxidized.
- C. Both I⻠and Cr₂O₇²⻠are oxidized.
- D. Both I⻠and Cr₂O₇²⻠are reduced.
Correct answer: A
Rationale: . I⻠loses an electron (oxidation), Cr₂O₇²⻠gains electrons (reduction).
2. Which phenomenon describes the separation of light into its component colors when passing through a prism?
- A. Refraction
- B. Diffraction
- C. Dispersion
- D. Reflection
Correct answer: c
Rationale: Dispersion occurs when light passes through a prism, causing different wavelengths (colors) to separate due to their varying speeds through the medium.
3. Which sentence uses the semicolon correctly?
- A. The play was long; however, it was very entertaining.
- B. The guests arrived; Sarah greeted them at the door.
- C. John likes apples; Mary prefers oranges.
- D. He was tired; he went to bed early.
Correct answer: B
Rationale: Option B joins two independent clauses related to the same event.
4. Differentiate between epithelial and connective tissue.
- A. Epithelial tissue is exclusively found in the lungs, while connective tissue supports tendons.
- B. Both are composed of cells, but epithelial tissue lines surfaces and glands, while connective tissue binds other tissues.
- C. Epithelial tissue is more vascularized, while connective tissue is responsible for muscle contraction.
- D. Epithelial tissue is the largest tissue type, while connective tissue is the smallest.
Correct answer: B
Rationale: Epithelial tissue covers surfaces and lines organs, while connective tissue provides support and structure throughout the body. Both are composed of cells, but their functions and locations differ.
5. What cellular process ensures accurate transmission of genetic material during cell division?
- A. Mitosis (somatic cell division)
- B. Meiosis (germ cell division)
- C. Replication (DNA duplication)
- D. Transcription (DNA to RNA conversion)
Correct answer: A
Rationale: Rationale: A) Mitosis is the process by which somatic cells divide to produce two identical daughter cells. During mitosis, the genetic material is accurately replicated and distributed to ensure each daughter cell receives a complete set of chromosomes. This process is crucial for growth, repair, and maintenance of multicellular organisms. B) Meiosis is the type of cell division that occurs in germ cells to produce gametes (sperm and egg cells). While meiosis also involves the transmission of genetic material, it is specifically geared towards generating genetic diversity through recombination and reduction of chromosome number. C) Replication is the process of copying DNA to produce an identical copy. While replication is essential for cell division, it is not the specific process that ensures accurate transmission of genetic material during cell division. D) Transcription is the process by which genetic information in DNA is copied into RNA. Transcription is important for gene ex
6. Based on the passage, the author's attitude towards online learning is likely to be
- A. Skeptical and critical, focusing solely on its limitations and negative impacts.
- B. Enthusiastic and optimistic, overlooking any potential issues and promoting its universal adoption.
- C. Cautiously pragmatic, recognizing its valuable potential while advocating for addressing its downsides.
- D. Indifferent and neutral, lacking any strong opinion on its role in education.
Correct answer: C
Rationale: The emphasis on both benefits and challenges suggests a balanced and pragmatic perspective, aligning with C.
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