Acid-Base Balance and Its Relationship with Nutrition Quiz

What is the average pH of arterial blood?

• 7.35

• 7.4

• 7.45

• 7.5

Which system is the first line of defense in maintaining blood pH?

• Endocrine system

• Buffer system

• Nervous system

• Respiratory system

What happens to pH when CO₂ levels increase in the blood?

• pH increases

• pH decreases

• pH remains the same

• pH fluctuates

Which organ is responsible for excreting H⁺ ions?

• Lungs

• Kidneys

• Heart

• Liver

What is the primary function of the bicarbonate buffer system?

• To produce CO₂

• To neutralize excess H⁺

• To absorb nutrients

• To regulate temperature

How does a high protein diet affect acid-base balance?

• It decreases acid production

• It increases acid production

• It has no effect

• It neutralizes acids

In which condition does the body experience respiratory acidosis?

• Excessive exercise

• Normal ventilation

• Hypoventilation

• Hyperventilation

What is the role of potassium in acid-base balance?

• It produces acids

• It forms buffers

• It has no role

• It helps maintain electrolyte balance

Which of the following is a consequence of chronic acid-base imbalance?

• Risk of osteoporosis

• Increased energy levels

• Improved digestion

• Enhanced muscle growth

What compensatory mechanism occurs in the kidneys during metabolic acidosis?

• Increased reabsorption of HCO₃⁻

• Decreased excretion of H⁺

• Increased production of H⁺

• Decreased reabsorption of HCO₃⁻