TEAS Practice Test Science

Correct Answer: B

Rationale: The correct answer is B: Fight infection. White blood cells are a crucial part of the immune system, responsible for identifying and attacking foreign invaders such as bacteria, viruses, and other pathogens. They play a key role in defending the body against infections and diseases. Choices A, C, and D are incorrect because white blood cells do not primarily function in transporting oxygen, producing antibodies, or regulating body temperature. Oxygen transport is mainly the role of red blood cells, antibody production is the function of B cells, and body temperature regulation involves processes such as sweating and shivering controlled by the hypothalamus.

Correct Answer: B

Rationale: The correct answer is B because tracking drug dosage and blood levels is essential for quantitative research, providing measurable data for analysis. This method allows for precise measurement and statistical analysis, ensuring objective results. Patient narratives (A) lack quantifiability, making data analysis challenging. Observing physical changes (C) is subjective and doesn't provide quantitative data. Writing journal notes (D) is qualitative and doesn't involve numerical data for quantitative research.

Correct Answer: B

Rationale: The correct answer is B: Skeletal muscle. Skeletal muscles are attached to bones and responsible for moving the skeleton through voluntary contractions. They are under conscious control, making them voluntary muscles. Cardiac muscle (A) is found in the heart and responsible for pumping blood. Smooth muscle (C) is found in organs and blood vessels, responsible for involuntary movements. Voluntary muscle (D) is a general term that can refer to both skeletal and smooth muscles, but in this context, it does not specifically address moving the skeleton.

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: B

Rationale: The correct answer is B: To control body movement and coordination. The nervous system is responsible for receiving sensory input, processing information, and sending signals to control muscle movement and coordination. It includes the brain, spinal cord, and nerves. Choice A is incorrect as the immune system fights infection. Choice C is incorrect as metabolism is regulated by the endocrine system. Choice D is incorrect as oxygen transportation is the function of the circulatory system, not the nervous system.