TEAS Practice Test Science

Correct Answer: D

Rationale: The correct answer is D, the cerebrum. The cerebrum is the largest part of the brain and is responsible for higher brain functions such as thought, reasoning, memory, and voluntary actions. It consists of the cerebral cortex, which plays a crucial role in processing sensory information and controlling motor functions. The amygdala (A) is involved in emotions and memory, the brain stem (B) controls basic life functions like breathing and heart rate, and the cerebellum (C) coordinates movement and balance. Therefore, the cerebrum is the correct choice for higher brain functions.

Correct Answer: B

Rationale: The large intestine's main role is to absorb water and form feces. First, undigested material passes from the small intestine to the large intestine. Second, water is absorbed, making the stool more solid. Finally, the formed feces are stored until they are eliminated from the body. This process is crucial for maintaining proper hydration and eliminating waste. Choices A, C, and D are incorrect as they describe functions performed by other parts of the digestive system, such as the stomach and small intestine.

Correct Answer: C

Rationale: The correct answer is C: The bladder. The bladder is located in the pelvic cavity, specifically in the lower part of the abdomen. It is a hollow organ that stores urine before it is expelled from the body. The kidneys (A) are located in the upper abdominal area, the colon (B) is part of the large intestine and extends from the cecum to the rectum, and the rectum (D) is the final part of the large intestine before the anus. Therefore, the bladder is the only structure among the choices that is specifically located in the pelvic cavity.

Correct Answer: B

Rationale: The correct answer is B: To exchange gases. The main function of the respiratory system is to facilitate the exchange of oxygen and carbon dioxide between the body and the external environment. This process occurs in the lungs through breathing, where oxygen is taken in and carbon dioxide is expelled. Absorbing nutrients (A) is the function of the digestive system, transporting oxygen (C) is part of the circulatory system's role, and regulating blood pressure (D) is primarily controlled by the cardiovascular system.

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.