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ATI TEAS 7

Scientific Reasoning

1. A hypothesis should be:

Correct answer: B

Rationale: Hypotheses guide scientific exploration by providing a framework for testing potential explanations.

2. What is the common name for the organic compound CH₃OH?

Correct answer: C

Rationale: CH₃OH is commonly known as methanol. The other choices represent different organic compounds.

3. What is the SI unit of measurement for acceleration?

Correct answer: d

Rationale: Acceleration is measured in meters per second squared (m/s²) in the SI unit system.

4. Which of the following blood vessels carries oxygenated blood from the lungs back to the left atrium of the heart?

Correct answer: B

Rationale: The correct answer is B: Pulmonary vein. The pulmonary vein is the blood vessel that carries oxygenated blood from the lungs back to the heart. Oxygenated blood flows from the lungs through the pulmonary veins to the left atrium of the heart, where it is then pumped out to the rest of the body through the aorta. The pulmonary artery, on the other hand, carries deoxygenated blood from the heart to the lungs for oxygenation. The aorta is the largest artery in the body and carries oxygenated blood from the heart to the rest of the body. The inferior vena cava carries deoxygenated blood from the lower body back to the right atrium of the heart. Therefore, the correct choice is B, the pulmonary vein, as it specifically carries oxygenated blood from the lungs back to the left atrium of the heart.

5. In a neutral atom, the number of electrons:

Correct answer: A

Rationale: Must be equal to the number of protons - For electrical neutrality, the positive charge of protons must be balanced by the negative charge of an equal number of electrons.

6. Julius plans to revisit the organizational chart of the department. He plans to create a new

Correct answer: B

Rationale: The correct answer is B: 'Solid line.' In organizational charts, solid lines typically represent formal reporting relationships, indicating direct authority and responsibility between positions. Creating a new solid line on the chart would signify a new formal reporting relationship within the department. This can be important for clarifying roles, communication channels, and decision-making processes. Boxes represent positions or roles in the organizational structure, while broken lines and dotted lines are typically used for informal relationships or advisory roles, rather than formal reporting relationships.

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