Lysosomes are best described as:
Digestive organelles
Protein factories
Transporters
Protein factories
The Correct Answer is A
A. Digestive organelles: Lysosomes contain hydrolytic enzymes that break down macromolecules, damaged organelles, and phagocytosed material—they function as intracellular digestive compartments.
B. Protein factories: “Protein factories” describes ribosomes (sites of protein synthesis), not lysosomes.
C. Transporters: Transport functions are associated with membrane transporters, vesicles, and the endomembrane system; lysosomes are primarily degradative rather than transport organelles.
D. Protein factories: Again, protein synthesis is the role of ribosomes and rough ER, not lysosomes.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Standing, facing forward, arms at sides, palms forward: The anatomical position is the standard reference posture: standing erect, facing forward, arms at sides with palms facing anteriorly.
B. Lying face down: This is the prone position, not the anatomical position.
C. Sitting with arms crossed: This is a nonstandard posture and not used as the anatomical reference.
D. Sitting with palms backward: Anatomical position specifies standing and palms facing forward, not sitting with palms backward.
Correct Answer is C
Explanation
A. Stores fat: Fat storage is a role of adipose (connective) tissue, not nervous tissue.
B. Transports blood: Blood transport is the function of the circulatory system; nervous tissue does not move blood.
C. Conducts electrical impulses: Nervous tissue (neurons) is specialized to generate and transmit electrical signals for communication and control.
D. Covers bones: Covering surfaces is a function of epithelial tissues (and periosteum for bone), not nervous tissue.
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