Water will move through the cell membrane by:
dialysis.
pumps.
facilitated diffusion.
osmosis.
The Correct Answer is D
A. dialysis: This is the diffusion of solutes (not water) across a selectively permeable membrane.
B. pumps: Pumps refer to active transport, which moves substances against a concentration gradient using energy.
C. facilitated diffusion: This is the movement of solutes through a membrane carrier or channel.
D. osmosis: This is specifically the passive movement of water from an area of low solute concentration to an area of high solute concentration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Proteins: Proteins are one of the four major classes of organic (carbon-based) molecules in the body.
B. Salts: Salts (like NaCl) are inorganic compounds because they typically do not contain carbon-hydrogen bonds.
C. Lipids: Lipids (fats) are a major group of organic substances essential for cell membranes and energy.
D. Nucleic acids: DNA and RNA are organic molecules that carry genetic information.
Correct Answer is C
Explanation
A. repolarization: This refers to the phase where a neuron returns to its resting state after firing.
B. refraction: In biology, this refers to the period during which a nerve cannot fire again (refractory period).
C. saltatory conduction: This is the correct term for an impulse "jumping" from one Node of Ranvier to the next along a myelinated axon, which significantly increases signal speed.
D. diffusion: This is the passive movement of molecules and does not describe the electrical leaping of a nerve impulse.
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