Two solutions of different concentrations of glucose are separated by a membrane that allows both glucose and water to pass through. When dynamic equilibrium is reached, there will be:
no movement of water or glucose.
movement of glucose but not water.
movement of water but not glucose.
an even exchange of material across the membrane.
The Correct Answer is D
A. no movement of water or glucose: At dynamic equilibrium, movement does not stop; rather, it happens at equal rates in both directions.
B. movement of glucose but not water: If the membrane is permeable to both, both will move to equalize concentrations.
C. movement of water but not glucose: If the membrane is permeable to both, both will move to equalize concentrations.
D. an even exchange of material: Particles continue to cross the membrane, but there is no net change in concentration because the rate of movement is equal in both directions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Aerobic metabolism produces lactic acid: Aerobic metabolism (with oxygen) produces carbon dioxide, water, and ATP, not lactic acid.
B. Anaerobic metabolism produces lactic acid: When oxygen is scarce, cells switch to anaerobic pathways, which result in the byproduct of lactic acid.
C. Anaerobic metabolism produces carbonic acid: Carbonic acid is formed when CO2 (from aerobic metabolism) dissolves in water.
D. Both A and C are true: This is incorrect as both A and C describe the wrong metabolic pathways for those products.
Correct Answer is D
Explanation
A. Environment: Factors like pollution, climate, or radiation exposure are known risk factors for various diseases.
B. Stress: Chronic stress weakens the immune system and contributes to cardiovascular and mental health issues.
C. Lifestyle: Choices regarding diet, exercise, and tobacco use directly impact the risk of developing chronic illnesses.
D. All of the above: Since environment, stress, and lifestyle are all recognized as significant risk factors for disease, "All of the above" is correct.
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