ATI TEAS Practice Science Test

Correct Answer: D

Rationale: The correct answer is D because a taxonomic system classifies living things based on their molecular traits, allowing for a more accurate and scientific approach to categorizing organisms. This system helps in understanding evolutionary relationships and genetic similarities among species. Choice A is incorrect as behavior is not the primary focus of taxonomy. Choice B is not the main purpose of a taxonomic system, although naming new organisms is a part of it. Choice C is incorrect as distinguishing living things from nonliving things is more related to biology in general rather than specifically to taxonomy.

Correct Answer: A

Rationale: The correct answer is A because the pharynx serves as a common passageway for both food and air. It allows food to pass from the mouth to the esophagus and air to pass from the nasal cavity to the larynx. It plays a crucial role in the process of swallowing and breathing. Choice B is incorrect because the warming and moistening of air during inhalation primarily occur in the nasal cavity and the respiratory tract, not the pharynx. Choice C is incorrect as the creation of a chest cavity at the base of the lungs is primarily the function of the diaphragm, not the pharynx. Choice D is incorrect as the structural support to the alveolar region is mainly provided by the alveoli themselves and surrounding tissues, not the pharynx.

Correct Answer: B

Rationale: The correct answer is B: Prone. Prone position allows access to the stomach as the patient lies on their stomach, facilitating examination or procedures on the abdominal area. In the prone position, the stomach is easily accessible for palpation or diagnostic tests. The other choices are incorrect because: A: Medial refers to the midline of the body and does not specifically provide access to the stomach. C: Superficial refers to the location near the surface and does not relate to positioning for stomach access. D: Supine refers to lying on the back, which is not ideal for direct access to the stomach.

Correct Answer: C

Rationale: Rationale: 1. Aluminum has 13 electrons. 2. Based on the electron configuration rule (2n^2), the first shell can hold 2 electrons, the second shell can hold 8 electrons, and the third shell can hold 3 electrons. 3. Therefore, in a neutral aluminum atom, electrons are typically distributed as follows: 2 in the first shell, 8 in the second shell, and 3 in the third shell. 4. Choice C correctly reflects this electron distribution, making it the correct answer. Summary: A: Incorrect because it does not follow the electron configuration rule for aluminum. B: Incorrect as it does not distribute electrons according to the electron capacity of each shell in an aluminum atom. D: Incorrect because it does not match the electron distribution based on the electron configuration rule for aluminum.

Correct Answer: C

Rationale: The correct answer is C: Inverse correlation. Negative variation refers to a situation where one variable increases while the other decreases, showing an inverse relationship. This is different from non-correlation (A), which implies no relationship between variables. Direct correlation (B) indicates both variables moving in the same direction, while positive correlation (D) implies both variables increasing together. Therefore, C is the only choice that accurately represents negative variation.