Neco 2022 Biology Question 15

Practice objective / multiple choice question 15 from the 2022 Neco Biology examination.

Neco 2022 Biology Objective / Multiple Choice Hard Difficulty
Question 15 NECO • 2022 • BIOLOGY • objective

In a labelled diagram of the human heart, the left ventricle is shown to have a stroke volume of 70\,mL and the resting heart rate is 75\,beats\,min\(^{-1}\). (a) Calculate the resting cardiac output in L\,min\(^{-1}\). (b) During vigorous exercise the heart rate rises to 150\,beats\,min\(^{-1}\) and the stroke volume increases by 15\%. What is the cardiac output then? (c) What is the percentage increase in cardiac output from rest to exercise?

Answer Options

Correct Answer A. a) 5.25 L/min; b) 12.08 L/min; c) 130 %
B. a) 5.75 L\/min; b) 13.00 L\/min; c) 125 %
C. a) 5.00 L\/min; b) 11.00 L\/min; c) 110 %
D. a) 4.90 L\/min; b) 10.50 L\/min; c) 115 %
Correct Answer
A
Correct Option:
a) 5.25 L/min; b) 12.08 L/min; c) 130 %

About This Question

This is Neco 2022 Biology Question 15. It is one of the objective questions from the 2022 Neco Biology examination.

Difficulty level: Hard .

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