Practice IB Sports, exercise and health science (SEHS) Topic A.2.1 Water and Electrolyte Balance with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for A.2.1 Water and Electrolyte Balance and mirrors Paper 1A, 1B, 2 style where relevant.
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Refer to the urine color chart. If an athlete’s urine consistently matches color D, what does this suggest about their hydration status?
What is the main effect of low sodium levels (hyponatremia) during endurance events?
Which electrolyte is most commonly recommended for replacement due to the greatest loss in sweat during exercise?
Why is sodium essential in maintaining fluid balance during exercise?
An ultramarathon runner drinks excessive plain water without electrolytes. Which condition is most likely to occur?