Waec Model Questions Vol1 2023 Biology Question 27

Practice objective / multiple choice question 27 from the 2023 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2023 Biology Objective / Multiple Choice Medium Difficulty
Question 27 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • BIOLOGY • objective

A drug is administered that specifically blocks the release of acetylcholine at the neuromuscular junction of skeletal muscles. Predict the effect of this drug on (a) skeletal muscle contraction, (b) heart rate, and (c) pupil size.

Answer Options

A. (a) Skeletal muscle contraction is reduced; (b) Heart rate increases; (c) Pupil size remains unchanged
B. (a) Skeletal muscle contraction is abolished (paralysis); (b) Heart rate decreases; (c) Pupil size dilates
Correct Answer C. (a) Skeletal muscle contraction is abolished (paralysis); (b) Heart rate remains unchanged; (c) Pupil size remains unchanged
D. (a) Skeletal muscle contraction is unchanged; (b) Heart rate remains unchanged; (c) Pupil size constricts
Correct Answer
C
Correct Option:
(a) Skeletal muscle contraction is abolished (paralysis); (b) Heart rate remains unchanged; (c) Pupil size remains unchanged

About This Question

This is Waec Model Questions Vol1 2023 Biology Question 27. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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