pH and buffers- ASW

What does a pH value of 7 represent?

• Acidic
• Neutral
• Basic
• Highly acidic

Which of the following acts as a buffer in biological systems?

• Sodium chloride
• Bicarbonate
• Glucose
• Urea

What is the primary cause of metabolic acidosis?

• Excess bicarbonate
• Loss of hydrogen ions
• Increased acid production
• Hyperventilation

What is the normal pH range of blood in most mammals?

• 6.4–6.8
• 7.35–7.45
• 7.8–8.0
• 8.1–8.3

Which condition can result from prolonged vomiting?

• Metabolic acidosis
• Metabolic alkalosis
• Respiratory acidosis
• Respiratory alkalosis

How do buffers maintain pH stability in a biological system?

• By releasing or absorbing protons
• By breaking down glucose
• By destroying acids
• By increasing CO2 levels

What is one symptom of metabolic acidosis in animals?

• Increased appetite
• Rapid breathing
• Slow heart rate
• Weight gain

What effect does metabolic alkalosis have on blood pH?

• It decreases blood pH below 7.0
• It increases blood pH above 7.45
• It stabilises blood pH at 6.8
• It has no effect on blood pH