Which of the following is the movement of a pure solvent (liquid) across a membrane?

Diffusion

Hydrostatic pressure

Osmosis

ATP

Answer and Explanation

The Correct Answer is C

Choice A reason: This is incorrect because diffusion is the movement of solutes (dissolved substances) from an area of higher concentration to an area of lower concentration, until equilibrium is reached.

Choice B reason: This is incorrect because hydrostatic pressure is the force exerted by a fluid against a wall or a membrane. Hydrostatic pressure can drive the movement of fluid and solutes across a membrane, but it is not the movement itself.

Choice C reason: This is correct because osmosis is the movement of a pure solvent (liquid) across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration, until equilibrium is reached.

Choice D reason: This is incorrect because ATP is not a movement, but a molecule. ATP stands for adenosine triphosphate, which is the main source of energy for cellular processes. ATP can provide energy for some types of transport across membranes, such as active transport.

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Correct Answer is B

Explanation

Choice A reason: This is incorrect because filtration is a passive transport mechanism that does not require cellular energy. Filtration is the movement of fluid and solutes across a membrane due to hydrostatic pressure.

Choice B reason: This is correct because active transport is a transport mechanism that requires cellular energy in the form of ATP. Active transport is the movement of molecules across a membrane against their concentration gradient, using carrier proteins.

Choice C reason: This is incorrect because diffusion is a passive transport mechanism that does not require cellular energy. Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration, until equilibrium is reached.

Choice D reason: This is incorrect because osmosis is a passive transport mechanism that does not require cellular energy. Osmosis is the movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

A. pH 7.50, PCO2 30 mmHg B. pH 7.45, PCO2 52 mmHg C. pH 7.25, PCO2 50 mmHg D. pH 7.35, PCO2 40 mmHg

Correct Answer is C

Explanation

Choice A reason: This is incorrect because this represents respiratory alkalosis, not acidosis. Respiratory alkalosis is characterized by a high pH and a low PCO2.

Choice B reason: This is incorrect because this represents a mixed disorder, not a pure respiratory acidosis. A mixed disorder occurs when both the pH and the PCO2 are abnormal, but in opposite directions.

Choice C reason: This is correct because this represents respiratory acidosis. Respiratory acidosis is characterized by a low pH and a high PCO2.

Choice D reason: This is incorrect because this represents normal values, not respiratory acidosis. Normal values for pH and PCO2 are 7.35 to 7.45 and 35 to 45 mmHg, respectively.

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Which of the following is the movement of a pure solvent (liquid) across a membrane?

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Naxlex Comprehensive Predictor Exams

Which transport mechanism involves cellular energy?

Correct Answer is B

Explanation

The registered nurse reviews the result of the arterial blood gas values with the licensed practical nurse and tells the LPN that the client has respiratory acidosis. The LPN would expect to note which of the following on the laboratory result report?

Correct Answer is C

Explanation

An anxious adult patient is experiencing a respiratory rate of 40 breaths/min. The most appropriate intervention that the nurse could do is to instruct the patient to:

What is the normal range of serum chloride level in adults?

Which patient is at the highest risk for dehydration?

A nurse is collecting data from a patient who has dehydration. Which of the following findings should the nurse expect?

An electrolyte is a mineral or salt dissolved in the body. (Write True or False)

If your patient has a higher than normal pH (alkalosis), you would expect to also see:

The nurse is aware that small ions such as glucose, oxygen, and carbon dioxide redistribute themselves through semipermeable membranes by a process called dropdown.

The patient who was admitted after vomiting for 3 days would show an abnormally low blood pressure because of a fluid shift from: