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Nursing Elites

ATI TEAS 7

Chemistry

1. What is the term for the reaction between an acid and a base to produce water and a salt?

Correct answer: b

Rationale: Neutralization is the reaction between an acid and a base to produce water and a salt. The other choices do not accurately describe neutralization.

2. Which vitamin plays a vital role in muscle function and helps prevent muscle weakness and fatigue?

Correct answer: B

Rationale: The correct answer is B: Vitamin B12. Vitamin B12 plays a crucial role in muscle function by aiding in the production of red blood cells, which carry oxygen to the muscles. This vitamin also helps maintain the health of nerves that control muscle movements. Deficiency in vitamin B12 can lead to muscle weakness and fatigue due to decreased oxygen delivery and impaired nerve function in the muscles. Vitamin A is important for vision and immune function, Vitamin D is crucial for bone health, and Vitamin E is an antioxidant that protects cells from damage, but they do not have the same direct impact on muscle function as Vitamin B12.

3. A water fountain has a spherical base (diameter 50cm) and a cylindrical body (diameter 30cm, height 80cm) on top. What is the total surface area of the fountain (excluding the water surface)?

Correct answer: C

Rationale: Calculate the surface area of the sphere and the cylinder separately, then add them up.

4. Which neurotransmitter is associated with mood, sleep, and memory?

Correct answer: B

Rationale: The correct answer is B: Serotonin. Serotonin is a neurotransmitter that plays a crucial role in regulating mood, sleep, and memory. It is known as the 'feel-good' neurotransmitter because it helps to promote feelings of well-being and happiness. Serotonin also contributes to the regulation of sleep patterns and plays a role in memory and learning processes. Dopamine is associated with reward and motivation, acetylcholine with muscle movement and cognitive functions, and glutamate with learning and memory as an excitatory neurotransmitter. Therefore, of the options provided, serotonin is the neurotransmitter most closely linked to mood, sleep, and memory.

5. The electrical conductivity of a strong acid solution is higher than that of a weak acid solution because:

Correct answer: B

Rationale: Strong acids completely dissociate, leading to a h

6. A medication dosage is listed as 1/2 teaspoon. What is the equivalent dosage in milliliters (1 teaspoon = 5ml)?

Correct answer: B

Rationale: 2.5ml: Divide the teaspoon dosage (1/2) by the conversion factor (2 teaspoons/5ml).

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