Which of these is true about the metabolism of glucose?
Aerobic metabolism produces lactic acid.
Anaerobic metabolism produces lactic acid.
Anaerobic metabolism produces carbonic acid.
Both A and C are true about the metabolism of glucose.
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. fluid balance and waste removal: While the system does move waste, "waste removal" is more a function of the urinary and digestive systems.
B. fluid balance and immunity: The lymphatic system returns leaked tissue fluid to the blood (fluid balance) and houses white blood cells that fight infection (immunity).
C. immunity and waste removal: This misses the critical role of returning fluid to the circulatory system to prevent edema.
D. waste removal and gas exchange: Gas exchange is strictly the function of the respiratory and circulatory systems.
Correct Answer is B
Explanation
A. central canal: This is the space in the center of the spinal cord through which CSF flows, but it is not the primary site of formation.
B. choroid plexuses: These are networks of capillaries found in the ventricles of the brain specifically designed to filter blood and produce CSF.
C. subarachnoid space: This is the area where CSF circulates around the brain and spinal cord.
D. arachnoid villi: These are responsible for the reabsorption of CSF back into the blood, not its formation.
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