TEAS Practice Test Science

Correct Answer: D

Rationale: The correct answer is D: Vital capacity. Vital capacity is the maximum volume of air a person can exhale after maximum inhalation, including tidal volume, inspiratory reserve volume, and expiratory reserve volume. Tidal volume (A) is the volume of air inhaled and exhaled during normal breathing, not maximum inhalation. Total lung capacity (B) is the total volume of air the lungs can hold at maximum inflation, including residual volume. Ventilation rate (C) refers to the number of breaths taken per minute, not the volume of air that can be expelled after maximum inhalation. In summary, vital capacity is the correct choice as it specifically represents the maximum volume of air that can be expelled from the lungs after maximum inhalation.

Correct Answer: B

Rationale: Correct Answer: B (Define the problem) Rationale: 1. Defining the problem is the first step in the scientific method to identify the research focus. 2. It helps in formulating specific research questions and objectives. 3. Before gathering qualitative data, having a clear problem statement is essential to guide the research process. Incorrect Choices: A: Communicating with a scientific journal is not a step in the scientific method, but rather a later stage after conducting research. C: Developing a hypothesis comes after defining the problem to propose a possible explanation for the research question. D: Categorizing data for statistical analysis is done after data collection, not before gathering qualitative data.

Correct Answer: D

Rationale: The correct answer is D because all of the statements are accurate regarding the microscopic anatomy of heart muscle. A: Cardiac muscle is indeed striated, short, fat, branched, and interconnected. B: Intercalated discs do anchor cardiac cells together and facilitate ion passage. C: The connective tissue endomysium serves as a support structure similar to tendons. Therefore, D is correct as all statements are true about the microscopic anatomy of heart muscle.

Correct Answer: C

Rationale: The correct answer is C: Natural Killer cells. Natural Killer cells are part of the innate immune response as they can recognize and eliminate infected or abnormal cells without prior exposure. B-cells and cytotoxic T-cells are part of the adaptive immune response, requiring specific antigens to respond. Antigen-Presenting Cells play a crucial role in initiating the adaptive immune response by presenting antigens to T-cells. Therefore, Natural Killer cells are the only cells listed that belong to the innate immune response.

Correct Answer: D

Rationale: The correct answer is D: Takes shape of container. Liquids do not have a fixed shape but take the shape of the container they are in due to the particles being able to flow and move past each other. Choice A is incorrect as liquids have moderate atomic attraction, not high. Choice B is incorrect as liquids have a fixed volume but not a fixed shape. Choice C is incorrect as liquids can have varying pressures depending on the conditions.