Wits Study Guide Practice Exams – University of the Witwatersrand 2026/2027 | Practice Questions and Answers Exam Solution Graded A+

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Practice Exam #1



1.)____________________ s the most important source of immediate energy which lasts about 3 - 5
seconds



a. Phosphocreatine

b.Glycolysis

c.Oxidative phosphorylation

d.Aerobic glycolysis



(Ch. 4, P. 66) - CORRECT ANSWERS ...a.Phosphocreatine



2.) During muscle contraction, the releases calcium into the sarcoplasm, which
allows for actin-myosin interaction.



a.transverse tubule

b.sarcoplasmic reticulum

c.epimysium

d.troponin/tropomyosin complex



(Ch. 4, P. 68) - CORRECT ANSWERS ...b.sarcoplasmic reticulum



3.) Which type of muscle fiber not only produces great force when stimulated but also resists fatigue?



a. Type I

b. Type IIa

c. Type IIx

d. Type Ia

,Wits Study Guide Practice Exams Only Questions And
Answers 2026/2027 All Answers 100% Correct Verified Best
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(Ch. 4, P. 69) - CORRECT ANSWERS ...b.Type IIa



4.) The volume of blood pumped by the heart per beat is known as .



a.stroke capacity

b.stroke rate

c.heart volume

d.stroke volume




(Ch. 4, P. 78) - CORRECT ANSWERS ...d.stroke volume



5.) What are the primary reasons women have lower VO2max values than men?



a.hemoglobin levels and motivation

b.motivation and body weight

c.hemoglobin levels and body fat percentage

d.body fat percentage and motivation




(Ch. 4, P. 76) - CORRECT ANSWERS ...c.hemoglobin levels and body fat percentage



6.) As the respiratory exchange ratio (R) increases, become the primary fuel source
for activity.



a.carbohydrates

b.fats

c.proteins

d.vitamins

,Wits Study Guide Practice Exams Only Questions And
Answers 2026/2027 All Answers 100% Correct Verified Best
Exam Solution Graded A+ For Success

(Ch. 4, P. 73) - CORRECT ANSWERS ...a.carbohydrates



7.) Studies have revealed that is the most significant factor in maintaining VO2max
with a reduced training load.




a.frequency

B.time

c.intensity

D.caloric intake



(Ch. 4, P. 83) - CORRECT ANSWERS ...c.intensity



8.) is the primary energy source cells use for biological work.



a. Carbohydrate

b.ATP

c.Calcium

d.ADP



(Ch. 4, P. 66) - CORRECT ANSWERS ...b.ATP



9.) Which form of heat loss occurs when heat is transferred from the surface of one object to the
surface of another with no physical contact between the objects?



a.conduction

b.evaporation

c.convection

d.radiation

, Wits Study Guide Practice Exams Only Questions And
Answers 2026/2027 All Answers 100% Correct Verified Best
Exam Solution Graded A+ For Success

(Ch. 4, P. 85) - CORRECT ANSWERS ...d.radiation



10.) is the volume of blood pumped by the heart per minute.




a. Heart rate

b. Respiratory quotient

c. Stroke volume

d. Cardiac output



(Ch. 4, P. 78) - CORRECT ANSWERS ...d.Cardiac output



11.) During a , participants exercise at progressively increasing work rates until they
reach maximum work tolerance.



a.graded exercise test (GXT)

b.maximal uptake test (MUT)

c.sub-maximal test (SMT)

d.graded maximal test (GMT)

(Ch. 4, P. 75) - CORRECT ANSWERS ...a.graded exercise test (GXT)



12.) The period of elevated oxygen uptake during recovery from exercise is known as .



a.oxygen deficit

b.steady-state requirement

c.oxygen debt

d.oxygen need payment



(Ch. 4, P. 74) - CORRECT ANSWERS ...c.oxygen debt