WITS Practical Exam Study Questions with Complete Solutions

WITS Practical Exam Study Questions with Complete Solutions ________is the most important source of immediate energy which lasts about 3-5 seconds a. Phosphocreatine b. Glycolysis c. Oxidative phosphorylation d. Aerobic glycolysis - answera. Phosphocreatine 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 - answerb. Sarcoplasmic reticulum 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 - answerb. Type IIa 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 - answerd. stroke volume What are the primary reasons women have lower VO2 max 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 - answerc. hemoglobin levels and body fat percentage As the respiratory exchange ratio (R) increases,____________ become the primary fuel source for activity. a. carbohydrates b. fats c. proteins d. vitamins - answera. carbohydrates Studies have revealed that ____________ is the most significant factor in maintaining VO2 max with a reduced training load. a. frequency b. time c. intensity d. caloric intake - answerc. intensity _________ is the primary energy source cells use for biological work. a. Carbohydrate b. ATP c. Calcium d. ADP - answerb. ATP 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 - answerd. radiation ____________ is the volume of blood pumped by the heart per minute. a. Heart rate b. Respiratory quotient c. Stroke volume d. Cardiac output - answerd. Cardiac output During a ____________, participants e