DHN 101 Final 2, DHN 101 EXAM 4 | 120 REAL EXAM QUESTIONS & ANSWERS | 2026
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There are three primary energy systems utilized by exercising muscles. Match each system with the duration of
exercise the system supports: - (answer)PCr-ATP Energy System: Exercise lasting a few seconds correct
Lactic Acid Energy System: Exercise lasting 30-40 seconds correct
Oxygen Energy System: Endurance exercise activities correct
Anthony is training for a half-marathon. On long-run days, which of the following snacks would be the most
appropriate to consume after one hour of running and why? - (answer)A banana and pretzels because they provide
carbohydrate, which helps prevent fatigue.
Anthony is training for a half-marathon. He trains for more than 90 minutes most days of the week. Calculate the
minimum number of kilocalories Anthony should consume daily to maintain his weight while training (165 pounds). -
(answer)3,750
Carbohydrates are an important macronutrient for fueling muscles. During exercise, where can the body obtain
carbohydrate? Check all that apply: - (answer)Glycogen stored in muscles
Glycogen stored in the liver cells
Glucose that is available in the bloodstream
,The immediate source of glucose for working muscles is glycogen that is stored in muscles. The liver also helps
supply glucose for muscles by degrading glycogen and releasing glucose molecules into the bloodstream.
Consider each statement about protein for athletes and determine whether it is true or false. - (answer)TRUE:
-the amino acids from dietary protein included in a small meal or snack after strenuous exercise can help muscle cells
repair damaged muscle tissue by synthesizing new proteins
-excess protein may be stored as fat
-the National Academy of Sciences maintains that no additional dietary protein is suggested for healthy adults
undertaking resistance or endurance exercise
FALSE:
-protein is a major biological fuel used during activity
-excess protein is stored in muscle tissue
-according to the Academy of Nutrition and Dietetics, protein intake for athletes should be at least 4.0 g/kg/day
Anaerobic glucose breakdown - (answer)-glucose degrades into pyruvate under these conditions
-provides most of the energy needed fro events that require a quick burst of energy, ranging from about 30 seconds to
2 minutes
-occurs when oxygen supply in the muscle is limited
-produces relatively small amounts of ATP
Aerobic glucose breakdown - (answer)-breakdown products are carbon dioxide and water
, -supplies more ATP than the other type of glucose breakdown
-occurs when plenty of oxygen is available in the muscle
steps of aerobic respiration - (answer)-glucose is degraded to form pyruvate, producing a small amount of ATP
-pyruvate moves from cytoplasm into mitochondria
-under aerobic conditions, pyruvate is completely degraded, forming CO2, H2O, and ATP
-CO2 is exhaled and H2O helps maintain body water volume
protein - (answer)contribution of this macronutrient to fueling muscles is generally small
fat - (answer)important energy source for low- or moderate- intensity aerobic exercise of more than 20 minutes
carbohydrate - (answer)-for endurance athletes in training, the majority of calories should come from this
macronutrient
-the most important macronutrient to consume during exercise that surpasses one hour
heat cramps example - (answer)Last summer, Monique developed painful muscle spasms in her calf muscles while
playing tennis match outdoors. The spasms forced her to quit the match.
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There are three primary energy systems utilized by exercising muscles. Match each system with the duration of
exercise the system supports: - (answer)PCr-ATP Energy System: Exercise lasting a few seconds correct
Lactic Acid Energy System: Exercise lasting 30-40 seconds correct
Oxygen Energy System: Endurance exercise activities correct
Anthony is training for a half-marathon. On long-run days, which of the following snacks would be the most
appropriate to consume after one hour of running and why? - (answer)A banana and pretzels because they provide
carbohydrate, which helps prevent fatigue.
Anthony is training for a half-marathon. He trains for more than 90 minutes most days of the week. Calculate the
minimum number of kilocalories Anthony should consume daily to maintain his weight while training (165 pounds). -
(answer)3,750
Carbohydrates are an important macronutrient for fueling muscles. During exercise, where can the body obtain
carbohydrate? Check all that apply: - (answer)Glycogen stored in muscles
Glycogen stored in the liver cells
Glucose that is available in the bloodstream
,The immediate source of glucose for working muscles is glycogen that is stored in muscles. The liver also helps
supply glucose for muscles by degrading glycogen and releasing glucose molecules into the bloodstream.
Consider each statement about protein for athletes and determine whether it is true or false. - (answer)TRUE:
-the amino acids from dietary protein included in a small meal or snack after strenuous exercise can help muscle cells
repair damaged muscle tissue by synthesizing new proteins
-excess protein may be stored as fat
-the National Academy of Sciences maintains that no additional dietary protein is suggested for healthy adults
undertaking resistance or endurance exercise
FALSE:
-protein is a major biological fuel used during activity
-excess protein is stored in muscle tissue
-according to the Academy of Nutrition and Dietetics, protein intake for athletes should be at least 4.0 g/kg/day
Anaerobic glucose breakdown - (answer)-glucose degrades into pyruvate under these conditions
-provides most of the energy needed fro events that require a quick burst of energy, ranging from about 30 seconds to
2 minutes
-occurs when oxygen supply in the muscle is limited
-produces relatively small amounts of ATP
Aerobic glucose breakdown - (answer)-breakdown products are carbon dioxide and water
, -supplies more ATP than the other type of glucose breakdown
-occurs when plenty of oxygen is available in the muscle
steps of aerobic respiration - (answer)-glucose is degraded to form pyruvate, producing a small amount of ATP
-pyruvate moves from cytoplasm into mitochondria
-under aerobic conditions, pyruvate is completely degraded, forming CO2, H2O, and ATP
-CO2 is exhaled and H2O helps maintain body water volume
protein - (answer)contribution of this macronutrient to fueling muscles is generally small
fat - (answer)important energy source for low- or moderate- intensity aerobic exercise of more than 20 minutes
carbohydrate - (answer)-for endurance athletes in training, the majority of calories should come from this
macronutrient
-the most important macronutrient to consume during exercise that surpasses one hour
heat cramps example - (answer)Last summer, Monique developed painful muscle spasms in her calf muscles while
playing tennis match outdoors. The spasms forced her to quit the match.
