ATI TEAS 7
ATI TEAS 7 Science Practice Test
1. What units of measurement would a triple beam balance show?
- A. Liters
- B. Grams
- C. Meters
- D. Gallons
Correct answer: B
Rationale: A triple beam balance is used to measure mass, typically in grams. Liters, meters, and gallons are units of volume, length, and capacity, respectively, not typically measured using a triple beam balance. Therefore, the correct answer is grams. Choice A, Liters, is a unit of volume. Choice C, Meters, is a unit of length. Choice D, Gallons, is a unit of capacity. These units are not typically measured using a triple beam balance.
2. A researcher wants to investigate the relationship between family income and quality of medical care. Which statement provides the best reason to conduct this investigation?
- A. The researcher can identify affordable medical care to recommend to low-income families.
- B. The investigation can help identify individuals who are healthy so they can maintain their health.
- C. Results of this investigation may identify a group of people who do not receive quality medical care and could benefit from improved medical treatments.
- D. There is a valid reason to conduct this investigation.
Correct answer: C
Rationale: The correct answer is C because identifying a group of individuals who do not receive quality medical care can lead to targeted interventions to improve their access to better medical treatments. This investigation can help address disparities in healthcare and improve outcomes for those in need. Choice A is incorrect because the focus is on identifying those who lack quality medical care, not just affordable care. Choice B is incorrect as it misinterprets the purpose of the investigation, which is to improve medical care for those not receiving quality care, rather than maintaining the health of those already healthy. Choice D is too vague and does not provide a specific reason for conducting the investigation, unlike choice C which highlights the potential benefits of identifying individuals in need of improved medical treatments.
3. Which of the following components of the human integumentary system is the deepest?
- A. Stratum basale
- B. Epidermis
- C. Hypodermis
- D. Dermis
Correct answer: C
Rationale: The hypodermis is the deepest layer of the integumentary system, located below the dermis. It serves as a layer of fat that helps insulate the body, store energy, and provide cushioning. The stratum basale is the deepest layer of the epidermis, not the entire integumentary system. The epidermis is the outermost layer of the skin, followed by the dermis, and then the hypodermis. Therefore, the correct answer is the hypodermis (choice C). Choices A, B, and D are incorrect as they do not represent the deepest layer of the integumentary system.
4. Which of the following substances is NOT a product of cellular respiration?
- A. Carbon dioxide
- B. Water
- C. Oxygen
- D. ATP
Correct answer: C
Rationale: The correct answer is C. Oxygen is not a product of cellular respiration; instead, it is consumed during the process. During cellular respiration, glucose is broken down in the presence of oxygen to produce energy in the form of ATP, carbon dioxide, and water. Carbon dioxide is released as a waste product, water is a byproduct of the chemical reactions, and ATP is the energy currency used by cells. Therefore, options A, B, and D are all products or outcomes of cellular respiration, while oxygen is a reactant.
5. Which of the following quantities do catalysts alter to control the rate of a chemical reaction?
- A. Substrate energy
- B. Activation energy
- C. Inhibitor energy
- D. Promoter energy
Correct answer: B
Rationale: The correct answer is B: Activation energy. Catalysts function by reducing the activation energy needed for a chemical reaction to proceed. By lowering the activation energy, catalysts facilitate the reaction without being consumed themselves. Substrate energy, inhibitors, and promoters are not directly altered by catalysts in the same way activation energy is. Substrate energy refers to the energy of the reactants, which is not altered by catalysts. Inhibitors increase the activation energy required for a reaction, while promoters enhance the effectiveness of a catalyst but do not represent a quantity altered by catalysts.
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