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Nursing Elites

ATI TEAS 7

physics

1. What is the unit of measurement for power?

Correct answer: c

Rationale: Power is measured in watts (W) in the SI unit system.

2. Cystitis is an inflammation of the:

Correct answer: B

Rationale: The correct answer is B: Bladder. Cystitis is an inflammation of the bladder, typically caused by a bacterial infection. Symptoms include frequent and urgent urination, along with pain or discomfort in the pelvic area. The kidneys (option A) are responsible for filtering blood and producing urine, but they are not the site of inflammation in cystitis. The ureters (option C) are the tubes that connect the kidneys to the bladder and are not typically affected by cystitis. The urethra (option D) is the tube that carries urine from the bladder out of the body, but it is not where the inflammation occurs in cystitis.

3. What is the atomic number of an element?

Correct answer: B

Rationale: The atomic number of an element is a fundamental property that defines the identity of an element. It is the number of protons in the nucleus of an atom. The number of protons determines the element's position in the periodic table and its chemical properties.

4. Which of the following is an example of a weak acid?

Correct answer: C

Rationale: Weak acids only partially dissociate in water, releasing a lower concentration of hydrogen ions.

5. What is the breakdown product of creatine phosphate, an energy source used for short bursts of muscle activity?

Correct answer: D

Rationale: The breakdown product of creatine phosphate is creatine. Creatine phosphate is stored in muscle cells and rapidly converts to creatine to provide energy for short bursts of muscle activity, such as weightlifting or sprinting. It is not converted into glucose, lactic acid, or carbon dioxide. Creatine is then further broken down into creatinine, which is excreted in urine. Therefore, the correct answer is D: Creatine.

6. Tight junctions are specialized regions between animal cells that perform which function?

Correct answer: D

Rationale: The correct answer is D, 'All of the above.' Tight junctions are specialized structures between animal cells that serve multiple functions. They facilitate communication between cells by allowing signaling molecules to pass through. Additionally, tight junctions provide anchorage between cells, helping to maintain tissue structure and integrity. Moreover, tight junctions regulate the selective passage of materials across cell layers, acting as a barrier to prevent the free diffusion of substances. Therefore, all the functions mentioned in the options are performed by tight junctions, making 'All of the above' the correct choice.

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