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Nursing Elites

ATI TEAS 7

Chemistry

1. Which of the following is the positively charged subatomic particle found in the nucleus of an atom?

Correct answer: B

Rationale: Protons are positively charged subatomic particles found in the nucleus of an atom. They have a mass of approximately 1 atomic mass unit (amu) and a charge of +1. The number of protons in an atom's nucleus determines the atomic number of the element, which is a unique identifier for each element.

2. What happens to the wavelength of a wave when its frequency increases while the speed remains constant?

Correct answer: b

Rationale: When the frequency of a wave increases while the speed remains constant, the wavelength decreases.

3. How can you effectively adapt your writing style to different audiences?

Correct answer: B

Rationale: Effective writing adapts to the audience's needs and background by adjusting vocabulary, tone, and level of detail.

4. In the context of the cardiac cycle, the P wave on an electrocardiogram (ECG) represents:

Correct answer: A

Rationale: The correct answer is A: "Atrial depolarization." The P wave on an ECG represents the depolarization of the atria, specifically the spread of electrical activity through the atria causing them to contract and push blood into the ventricles. This is the first wave observed on the ECG and signifies the beginning of the cardiac cycle. Ventricular depolarization is represented by the QRS complex, atrial repolarization is typically not visible on a standard ECG due to its timing with the QRS complex, and ventricular repolarization is represented by the T wave. Therefore, option A is the most appropriate choice in this context.

5. What is the name of the white blood cells that attack foreign invaders?

Correct answer: A

Rationale: Rationale: Phagocytes are a type of white blood cell that plays a crucial role in the immune system by engulfing and digesting foreign invaders such as bacteria, viruses, and other harmful substances. They are part of the body's innate immune response and are essential for protecting the body against infections. Lymphocytes, on the other hand, are another type of white blood cell involved in the adaptive immune response, producing antibodies and coordinating immune responses. Platelets are cell fragments involved in blood clotting, while red blood cells are responsible for carrying oxygen to tissues.

6. In technical writing, it's crucial to:

Correct answer: C

Rationale: Technical writing aims to convey information accurately and understandably to various audiences, requiring clear and concise language.

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