Waec Model Questions Vol1 2025 Biology Question 36
Practice objective / multiple choice question 36 from the 2025 Waec Model Questions Vol1 Biology examination.
An increase in baroreceptor firing caused a 30% decrease in sympathetic tone and a 20% increase in parasympathetic tone. The baseline heart rate is 70 bpm. Each unit change in sympathetic tone raises heart rate by 0.5 bpm, while each unit change in parasympathetic tone lowers heart rate by 0.3 bpm. Assuming the baseline sympathetic and parasympathetic tones are each 1 unit, what is the new heart rate (to one decimal place)?
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About This Question
This is Waec Model Questions Vol1 2025 Biology Question 36. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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