ATI TEAS 7
Biology
1. What is the scientific name for the tear gland?
- A. Lachrymal gland
- B. Lacrimal sac
- C. Lacrimal duct
- D. Lacrimal papilla
Correct answer: A
Rationale: The lachrymal gland is the almond-shaped gland located above each eye, responsible for producing tears. Tears are a complex mixture of water, electrolytes, proteins, and other substances that help lubricate and protect the eyes from dryness and irritation.
2. The deeper layer of the skin, containing connective tissue, blood vessels, and nerve endings, is called the:
- A. Epidermis
- B. Dermis
- C. Hypodermis
- D. Stratum corneum
Correct answer: B
Rationale: The correct answer is B: Dermis. The dermis is the deeper layer of the skin that contains important structures such as connective tissue, blood vessels, and nerve endings. It plays a crucial role in providing support and nourishment to the epidermis, the outermost layer of the skin. The epidermis, option A, is actually the outermost layer responsible for protecting the body from environmental factors. The hypodermis, option C, is the deepest layer of the skin that primarily consists of fat and connective tissue. Stratum corneum, option D, is the outermost layer of the epidermis composed of dead skin cells. Therefore, the dermis is the correct answer in this case.
3. Identify the predicate in the following sentence: "The children built a sandcastle on the beach."
- A. on the beach
- B. built a sandcastle
- C. children
- D. the
Correct answer: B
Rationale: The predicate is the verb and any words following it that describe the action or state of being of the subject.
4. What happens to the speed of a sound wave when it travels from air to water?
- A. It increases because water is denser.
- B. It decreases because water is denser.
- C. It remains the same.
- D. Speed depends on the frequency, not the medium.
Correct answer: A
Rationale: Sound waves travel faster in denser mediums like water compared to air due to stronger interactions between particles.
5. Which of the following processes breaks down cellular components for recycling or waste removal?
- A. Photosynthesis
- B. Cellular respiration
- C. Cell division
- D. Phagocytosis
Correct answer: D
Rationale: The correct answer is D: Phagocytosis. Phagocytosis is a process in which cells engulf and digest cellular components, pathogens, or other materials for recycling or waste removal. Photosynthesis (option A) is the process by which plants convert sunlight into energy. Cellular respiration (option B) is the process of converting glucose into ATP for energy production. Cell division (option C) is the process by which a cell divides into two daughter cells. Therefore, phagocytosis is the most relevant process that breaks down cellular components for recycling or waste removal.
6. Which sentence uses the colon correctly?
- A. I brought snacks: chips, salsa, and guacamole.
- B. The winner is: Sarah!
- C. He loves all things chocolate: cake, ice cream, and candy bars.
- D. Please bring the following items: pen, paper, and stapler.
Correct answer: A
Rationale: Colons are used to introduce a list or explanation that follows an independent clause. Options (a) and (c) use the colon correctly.
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