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Nursing Elites

ATI TEAS 7

Chemistry

1. Which of the following is the smallest part of an element that can still be recognized as that element?

Correct answer: D

Rationale: An atom is the smallest unit of matter that retains the chemical properties of an element. It is composed of a nucleus containing protons and neutrons, and electrons that orbit the nucleus. The number of protons in the nucleus determines the atomic number of the element, and the number of neutrons determines the isotope of the element.

2. Which of the following is a pair of nerves that originates from the brain?

Correct answer: B

Rationale: The correct answer is B, Olfactory nerves, because they are a pair of cranial nerves that originate from the brain and are responsible for the sense of smell. Spinal nerves (option A) originate from the spinal cord, not the brain. The sciatic nerve (option C) is a large nerve that runs from the lower back down the back of each leg and also originates from the spinal cord, not the brain. The optic nerve (option D) is a cranial nerve that connects the eye to the brain, but it is not a pair of nerves that originates from the brain. Therefore, the olfactory nerves are the only pair of nerves listed that specifically originate from the brain.

3. A pizza has a diameter of 40cm. What is its perimeter (circumference)?

Correct answer: C

Rationale: Multiply the diameter by π: perimeter = π * diameter = π * 40cm ≈ 125.6cm (Note: π ≈ 3.14)

4. What is the 3D structure of a protein called?

Correct answer: A

Rationale: Rationale: - Primary structure refers to the linear sequence of amino acids in a protein. - Secondary structure refers to local folded structures within a protein, such as alpha helices and beta sheets. - Tertiary structure is the overall 3D shape of a protein, which is determined by interactions between amino acid side chains and the environment. - Quaternary structure refers to the arrangement of multiple protein subunits in a protein complex. Therefore, the 3D structure of a protein is called the tertiary structure because it represents the overall folding of the protein into a specific shape.

5. The human body's command center, integrating sensory information and coordinating movement and vital functions, is the:

Correct answer: B

Rationale: The correct answer is B: Brain. The brain serves as the command center of the human body, receiving sensory information from various parts of the body and coordinating responses. It is responsible for controlling movement, regulating vital functions such as breathing and heart rate, and processing thoughts and emotions. The lungs (A), kidneys (C), and stomach (D) each have specific functions within the body, but they do not serve as the central command center like the brain does. Therefore, the brain is the correct answer to this question.

6. What is the main idea of the passage?

Correct answer: C

Rationale: B mentions Petra's architecture, but not its connection to trade. A and D are factually incorrect and not supported by the passage. Choice C accurately identifies Petra's rise and fall as tied to its position on the Silk Road, making it the main idea.

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