Acid-Base Balance in Biological Systems
Biology ⇒ Biological Systems and Homeostasis
Acid-Base Balance in Biological Systems starts at 10 and continues till grade 12.
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A patient has a blood pH of 7.28. Is this considered acidosis or alkalosis?
A patient with kidney failure is unable to excrete enough hydrogen ions. What acid-base disorder might develop?
A person is breathing rapidly and deeply after intense exercise. How does this affect their acid-base balance?
Define a buffer in the context of biological systems.
Describe how the body compensates for metabolic acidosis.
A patient has a blood pH of 7.28. Is this considered acidosis or alkalosis?
A patient with kidney failure is unable to excrete enough hydrogen ions. What acid-base disorder might develop?
A person is breathing rapidly and deeply after intense exercise. How does this affect their acid-base balance?
If a solution has a pH of 5, it is (1) acidic (2) neutral (3) basic (4) amphoteric
If the concentration of H⁺ ions in a solution increases, the pH will (1) increase (2) decrease (3) stay the same (4) become neutral
What is the normal pH range of human blood? (1) 6.8–7.0 (2) 7.35–7.45 (3) 7.8–8.0 (4) 6.0–6.5
Which of the following best describes a base? (1) A substance that donates H⁺ ions (2) A substance that accepts H⁺ ions (3) A substance that increases H⁺ concentration (4) A substance that lowers pH
Acidosis occurs when the blood pH falls below ________.
Alkalosis is a condition where blood pH is ________ than normal.
Fill in the blank: The chemical equation CO₂ + H₂O ⇌ H₂CO₃ ⇌ H⁺ + ________ represents the bicarbonate buffer system.
Fill in the blank: The chemical formula for bicarbonate ion is ________.
True or False: Proteins can act as buffers in the blood.
True or False: The bicarbonate buffer system involves the equilibrium between carbonic acid and bicarbonate ions.
True or False: The body can survive only within a very narrow pH range.
True or False: The lungs help maintain acid-base balance by removing carbon dioxide from the body.
