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: 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.

Correct Answer: B

Rationale: Sure, here's the step-by-step rationale for why choice B is the correct answer: 1. Qualitative research is subjective. 2. Scientific arguments should rely on objective, quantitative data. 3. Extensive use of qualitative research weakens objectivity. 4. Objective data strengthens scientific arguments. Summary of other choices: A: Lack of bias strengthens a scientific argument by ensuring objectivity. C: Reproducibility strengthens a scientific argument by validating results. D: Standing the test of time strengthens a scientific argument by showing consistency.

Correct Answer: B

Rationale: The correct answer is B: Nephron. The nephron is the basic structural and functional unit of the kidney because it is responsible for filtering blood, regulating fluid balance, and producing urine. It consists of the glomerulus, tubules, and collecting ducts. The other choices, A: Neuron, C: Glomerulus, and D: Axon, are not correct as they do not perform the specific functions related to kidney physiology. Neurons are nerve cells, glomerulus is a part of the nephron, and axon is a part of a neuron.

Correct Answer: C

Rationale: The correct answer is C: To exchange gases. The primary function of the respiratory system is to facilitate the exchange of oxygen and carbon dioxide between the air we breathe and our blood. This process is essential for cellular respiration and energy production in the body. Choices A, B, and D are incorrect because digestion of food is primarily handled by the digestive system, nutrient transportation is mainly done by the circulatory system, and regulation of body temperature is primarily controlled by the integumentary and nervous systems.