Science TEAS Practice Test

Correct Answer: D

Rationale: The correct answer is D: Veins. Veins have the lowest blood pressure among the structures listed. This is because veins have thinner walls and larger lumens compared to arteries and arterioles, which results in less resistance to blood flow and lower pressure. Venules are small vessels that connect capillaries to veins and have slightly higher pressure than veins. Arteries and arterioles have thicker walls and smaller lumens to withstand the higher pressure of blood ejected by the heart. Therefore, veins have the lowest blood pressure due to their structural characteristics.

Correct Answer: B

Rationale: To be included in the formation of a scientific conclusion, evidence must be reproducible. This means that the findings can be repeated by other researchers to ensure the validity and reliability of the results. Reproducibility is essential in scientific research to confirm the accuracy of the findings and allow for independent verification. Quantitative evidence, while important in providing numerical data, is not always necessary for forming a scientific conclusion. Qualitative evidence, which describes qualities or characteristics, can also contribute to scientific conclusions. The choice "C: Obvious" is incorrect because scientific evidence may not always be obvious and often requires careful analysis and interpretation. Choice "D: All of the above" is incorrect because not all scientific evidence needs to be quantitative, and while reproducibility is crucial, it is not necessary for evidence to be obvious to be included in forming a scientific conclusion.

Correct Answer: D

Rationale: The correct answer is D: Veins. Veins have the lowest blood pressure among the structures listed. This is because veins have thinner walls and larger lumens compared to arteries and arterioles, which results in less resistance to blood flow and lower pressure. Venules are small vessels that connect capillaries to veins and have slightly higher pressure than veins. Arteries and arterioles have thicker walls and smaller lumens to withstand the higher pressure of blood ejected by the heart. Therefore, veins have the lowest blood pressure due to their structural characteristics.

Correct Answer: B

Rationale: The correct answer is B: Endocrine system. The adrenal glands are a crucial part of the endocrine system as they produce hormones such as cortisol and adrenaline. These hormones regulate various bodily functions like metabolism, stress response, and blood pressure. The immune system (A) is responsible for defending the body against pathogens, not producing hormones. The lymphatic system (C) is involved in immunity and fluid balance, but not hormone production. The respiratory system (D) is responsible for gas exchange in the body, not hormone regulation. Therefore, the adrenal glands being part of the endocrine system is the most accurate choice.

Correct Answer: D

Rationale: The correct answer is D: Help red blood cells transport oxygen. Hemoglobin is a protein in red blood cells that binds to oxygen in the lungs and releases it in tissues. It does not transport oxygen itself, but it aids red blood cells in carrying oxygen. Choice A is incorrect because hemoglobin carries oxygen, not transports it. Choice B is incorrect because hemoglobin binds to oxygen, not to red blood cells. Choice C is incorrect because hemoglobin primarily transports oxygen, not carbon dioxide.