What distinguishes an ion from an electrolyte?
An ion is a charged particle, while an electrolyte is a solution that conducts electricity.
lons are formed only in solid states,while electrolytes are only in liquids.
lons are found only in non-metals, while electrolytes are found in metals.
An ion is always positive, while an electrolyte is always negative.
The Correct Answer is A
A. An ion is a charged particle, while an electrolyte is a solution that conducts electricity: Ions are atoms or molecules that carry a positive or negative charge. Electrolytes are substances that dissociate into ions in a solution, enabling the conduction of electrical current.
B. Ions are formed only in solid states, while electrolytes are only in liquids: Ions can exist in solid, liquid, or gaseous states depending on the compound, and electrolytes are defined by their ability to dissociate in a solution, not by state alone.
C. Ions are found only in non-metals, while electrolytes are found in metals: Ions can form from both metals and non-metals, and electrolytes result from ionic compounds dissolving in a solvent, regardless of whether the elements are metallic or non-metallic.
D. An ion is always positive, while an electrolyte is always negative: Ions can be either positive (cations) or negative (anions), and electrolytes contain both types of ions to maintain electrical neutrality in solution.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Ball and socket joints: Ball and socket joints, such as the shoulder and hip, allow for a wide range of movement in multiple directions. They are synovial joints with a fluid-filled cavity, not primarily connected by cartilage for limited motion.
B. Synovial joints: Synovial joints have a joint cavity filled with synovial fluid and permit free movement. They include hinge, pivot, and ball-and-socket joints, providing more mobility than partial-movement joints.
C. Cartilaginous joints: Cartilaginous joints are connected by cartilage, allowing limited or partial movement. Examples include intervertebral discs and the pubic symphysis, providing stability while permitting slight flexibility.
D. Fibrous joints: Fibrous joints are connected by dense connective tissue and allow little to no movement. Examples include sutures in the skull, which provide strength and protection rather than flexibility.
Correct Answer is C
Explanation
A. S3: The third heart sound occurs during early diastole due to rapid ventricular filling, often heard in children or in adults with heart failure.
B. S1: The first heart sound is caused by the closure of the atrioventricular (mitral and tricuspid) valves at the start of ventricular systole.
C. S2: The second heart sound is produced by the closure of the semilunar valves (aortic and pulmonary) at the end of ventricular systole, marking the beginning of diastole.
D. S4: The fourth heart sound occurs during late diastole due to atrial contraction, often associated with a stiff or hypertrophic ventricle.
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